what is the biological importance of ph class 10

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PH change as the cause of tooth decay: Fig. To get relief from this pain, we take tablets known as antacids. Sometimes excess of acid is produced in the stomach due to overeating or eating spicy foods. Too much acid rain can lower the pH of river water to such an extent and make it so acidic that the survival of aquatic animals becomes difficult or kill the aquatic animals. Self defence by animals and plants through chemical Warfare: The sting of the honey bee contains formic acid, this acid causes a lot of irritation and pain. The importance of Biology within the field of psychology has been and continues to be widely debated. (3). The product of concentration of H+(aq) and OH-(aq) in water is constant (equal to 1 × 10-14 mol2 litre-2 at 25°C) and is known as ionic product of water (KW).KW = [H+(aq)] [OH- (aq)]= (1 × 10-7) (1 × 10-7) = 1 × 10-14 mol2 litre-2 at 25°CIf [H+(aq)] = [OH-(aq)] = 1 × 10-7 mol litre-1, then the solution is neutral.if H+(aq) > OH- (aq) or(H+ (aq) > 1 × 10-7 mol litre-1), then the solution should be acidic and if H+(aq) < OH-(aq) or H+(aq) < 1 × 10-7 mol litre-1, then the solution should be basic or alkaline. By convention H + is used to represent hydronium ions (H 3 O +).A log system simplifies the notation of the H + concentration in a medium. Very Strong acids solution can have pH values less than zero … Create your account. This is the salt which you sprinkle on your salads and use in your kitchens. Plants cannot grow in too alkaline or too acidic soils. (2) When a wasp stings,it injects an alkaline liquid into the skin.Then rubbing with a mild     acid like vinegar on the stung area of the skin gives relief. All these products are commercially important. , a Danish Chemist in 1909 introduced the concept of measuring the concentration of hydrogen ions (H, (aq)) in a particular solution., The p in pH stands for '. ' This stage is called acidity. Mathematics []. Sea water contains about 3.5% of soluble salts, the most common of which is sodium chloride (2.7 to 2.9%). Sambhar lake in Rajasthan is also a good source of common salt (sodium chloride) is also found as rock salt. Because strong acids and bases are dangerous, most household items are diluted 1. The protection is afforded by the presence in the solution of a weak acid and related salt (for example, acetic acid, and sodium acetate), which maintains the equilibrium by means of ion transfer and neutralization. Table - pH Value of Some Common Substances. Beds of rock salt were formed when lakes/Seas dried up in past. Buffers are important in biological systems because of their ability to maintain constant pH conditions. Generally, the pH in the mouth is more than 7, as the saliva produced in the mouth is basic in nature. It can also be used to determine the nature of a solution. Thank you so much. They help in the breakdown of large molecules into smaller molecules or bring together two smaller molecules to form a larger molecule. Upload Choose a File Many of water’s roles in supporting life are due to its molecular structure and a few special properties. Question 1 What happens during a honey bee sting.What is its remedy? pH indicates the level of H+ ions, where low pH indicates too many H+ ions and high pH indicates too many OH- ions. Your email address will not be published. Common salt is a raw material for chemicals and play an important role for making various materials of daily use. Sometimes excess of acid is produced in the stomach due to overeating or eating spicy foods. pH is also important when cycling a new aquarium, when ammonia can build up due to a lack of nitrifying bacteria to process it. Thanks, Hmm really good its same as I have in my text The acid so produced does not harm the stomach walls, but kills germs and bacteria which enter in our digestive system along with food, thus in a way it protects us from diseases and helps in digestion. The two common antacids are Milk of Magnesia (Magnesium Hydroxide)and Sodium Bicarbonate(Baking soda). Q:-Distinguish between intracellular and extracellular digestion?Q:-How useful is the study of the nature of body cavity and coelom in the classification of animals?Q:-Describe the digestive role of chymotrypsin. One of the most important factors that control heavy metal uptake is pH (Amini et al., 2005).In fact, solubility and bioavailability of heavy metals increased with a decrease in the soil pH, resulting in an increased metal uptake by the plants (Fässler et al., 2010).The solubility and mobility of Cu is affected by soil pH, and in soils in which the pH reached 5, Cu 2+ showed … 1.8 X 10-14 M b. After swallowing, the food reaches the stomach where upper and lower parts of stomach have different pH values. Sea water contains about 3.5% of soluble salts, the most common of which is sodium chloride (2.7 to 2.9%). pH level of toothGenerally, the pH in the mouth is more than 7, as the saliva produced in the mouth is basic in nature. You can see some Importance of pH in Everyday Life and Salts Class 10 Notes | EduRev sample questions with examples at the bottom of this page. (2). Buffers are solutions that moderate pH changes when an acid or base is added to the buffer system. 9.2-10.6: pH meters: 0-14: 0.1 or less depending on the meter: High quality pH meters can be expensive. The Biological Importance of pH Broader Impacts Using Maalox will help raise the pH level of the stomach to relieve the strong level of hydrochloric acid that is produced in the stomach. ... Get Question Papers of Last 10 Years Which class are you in? Most of the plants grow best when the pH of soil is close to 7. All aspects of cell structure and functions are adapted to the physical and chemical properties of water. Your email address will not be published. A salt is a ionic compound which dissolved in water dissociate to positive ions other than hydrogen ions (H+) and negative ions other than hydroxyl ions (OH-) are called salts.Example- NaCl + Water → Na+(aq) + Cl-(aq)CuSO4 + Water → Ca2+(aq) + SO42- (aq)NAMING OF SALTS(a) Salt obtained from "Sulphuric acid" are called "Sulphates".Example: Na2SO4, CuSO4(b) Salt obtained from "nitric acid" are called "Nitrates".Example:  KNO3, NaNO3(c) Salt obtained from "hydrochoric acid" are called "Chlorides".Example: NaCl, CaCl2, KCl(d) Salt obtained from "phosphoric acid" are called "Phosphates".Example: Ca3(PO4)2, Na3PO4, Mg3(PO4)2(e) Salt obtained from "carbonic acid" are called "Carbonates".Example: Na2CO3, K2CO3, CaCO3. Buffers are important in biological systems because of their ability to maintain constant pH conditions. The medium in our stomach is highly acidic and has pH around 1.2. On the pH scale we can measure pH from "0" (very acidic) to 14 (very alkaline).Fig. (VI) By direct combination of elements -When metal powder is heated with sulphur, we get corresponding metal sulphides which are insoluble salts. Some scientists such as Francis Crick, believe that explanations for psychological differences can only be found by the means of studying the biology of the brain and genes, this belief is known as reductionism. It’s really helpful for us If the soil is too acidic or too basic (too alkaline), the plants grow badly or do not grow at all. out Class 10 lecture & lessons summary in the same course for Class 10 Syllabus. The pH scale ranges from 0 to 14, with a pH of 7 being neutral. Combining the core tenets of biology and chemistry, the field plays a huge role in the development of … Acid in our body acid causes tooth decay. Due to anaerobic respiration lactic acid gets accumulated in our muscles causing fatigue. Our body works well with in a narrow pH range of 7.0 to 7.8. We recommend checking if there is one available at your local high school chemistry laboratory before purchasing. Importance of pH in Everyday Life and Salts Class 10 Notes | EduRev notes for Class 10 is made by best teachers who have written some of the best books of All aspects of cell structure and functions are adapted to the physical and chemical properties of water. The same effect can be obtained by the use of a blend of two acid salts; phosphates, carbonates, and ammonium salts are common … Required fields are marked *, pH plays very important role in our life through following ways, Plants and animals are sensitive to pH change, Self Defence by animals and plants through chemical warfare. 4. Any pH reading below 7 is acidic and any pH above 7 is alkaline. The pH scale ranges from 0 to 14, with a pH of 7 being neutral. A pH of 7 indicates a neutral soil. Most horticultural crops will grow satisfactorily in soils having a pH between 6 (slightly acid) and 7.5 (slightly alkaline). Tests & Videos, you can search for the same too. H2SO4 → ZnSO4 + H2(g)2Al + dil 6HCl → 2AlCl3 + 3H2 (g)2Na + dil. This acid lowers the pH in the mouth, tooth decay starts when the pH of acid formed in the mouth falls below 5.5. Institutional hurdles. your solution of Importance of pH in Everyday Life and Salts Class 10 Notes | EduRev search giving you solved answers for the same. Thank you so much! We … If [H+] = 10-7, pH is 7 and the solution is neutral. IMPORTANCE OF PH IN EVERYDAY LIFE 1. Learn more about pH. Chemicals can be added to soil to adjust its pH and make it suitable for growing plants. The nettle leaves have stinging hair. Such as sodium hydroxide, baking soda, washing soda, bleaching powder and many more. If this is in your physics text book in lesson acids and bases then go for it. Treatment of Acidic or Basic Soil: The pH of acidic soil can reach as low as 4 and that of the basic soil can go up to 8.3. Therefore to prevent tooth decay, it is advised to clean the mouth and use toothpastes which are generally basic, for cleaning the teeth. The essentiality of water for living systems is quite evident as without water, there is no life. Although the pH of blood ranges from 7.35-7.45, the pH of other body fluids is different. Our body works well with in a narrow pH range of 7.0 to 7.8. But how important is biology to our everyday routines, exactly? It neutralise the excess acid and prevent tooth decay. Ammonia exists as free ammonia (NH₃), which is toxic to fish, and ammonium ion (NH₄⁺), which is not as harmful. If the soil is too basic (or too alkaline) then its alkalinity can be reduced by adding decaying organic matter (manure or compost). Conversely, bases can have pK a 7.0. Coccolithophores are generally regarded as calcareous scale-bearing marine algae, 2.0–75.0 μm in cell diameter. The salt which are formed by partial replacement of hydroxyl (-OH) groups of a polyacidic base by an acid radial are called basic salts. The nettle sting, being acidic can be neutralised by rubbing baking soda on the skin. 3. Good explanation, this helpful to me… She later dropped out of graduate school, went to Harvard Law School and is now a senior lawyer for a major environmental organization. Last Updated on March 20, 2019 By Mrs Shilpi Nagpal 25 Comments. this is your one stop solution. Food reserve: Lipids provide are insoluble in aqueous solutions and hence can be stored readily in the body as a food reserve. in German, meaning power. Can you think of an important biological BASE with a pK a less than 7.0? . When metal powder is heated with sulphur, we get corresponding metal sulphides which are insoluble salts. Thanks a lot☺☺. When we pass electricity through a solution of sodium chloride, commonly called. Almost all biological processes are pH dependent. Food material: Lipids provide food, highly rich in calorific value. If [H+] < 10-7, pH is more than 7 and the solution is basic. of Importance of pH in Everyday Life and Salts Class 10 Notes | EduRev for Class 10, the answers and examples explain the meaning of chapter in the best manner. The process of production of sodium hydroxide from sodium chloride is known as chlor-alkali process because of products formed - chlor for chlorine and alkali for sodium hydroxide. This is It exists in different physical states – solid, liquid and gas – and makes up 70% of the surface of Earth, plus 65 – 90% of the weight of all living organisms. 2 Plants and animals are sensitive to pH change. Importance Of Medicinal Plants 790 Words | 4 Pages Medicinal Plants & Science “Let thy food be thy medicine, and thy medicine shall be thy food.” –Hippocrates Every day we are trying to seek and heal the ill and injured is best as possible, including ourselves by … The pain can be reduced by applying baking soda paste on the affected region as the acid gets neutralised. Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. Question 5 How can tooth decay caused by the pH change be prevented? A substance formed by the partial or complete replacement of H. (aq) ions of an acid by a metal or electropositive ion, is called a salt. pH plays a very important role in our everyday life. At GENERAL METHODS OF PREPARATION OF SOLUBLE SALTS(i) By direct combination of elements - By heating two elements together, (ii) By the action of dilute mineral acids on active metals - Zn + dil. The process of production of sodium hydroxide from sodium chloride is known as chlor-alkali process because of products formed - chlor for chlorine and alkali for sodium hydroxide. The pH of a solution is calculated by pH = -log [H +]. In our body pH plays an important role such as the HCl in the digestive system. The pH will determine what type of plant will grow and thrive in the soil. It is very beneficial for me sir may you live long, wow cool never knew these things thanx a lot, It is really helpful for my project. To Study Importance of pH in Everyday Life and Salts Class 10 Notes | EduRev for Class 10 If the soil is too acidic or too basic (too alkaline), the plants grow badly or do not grow at all. . Plants and Animals are pH Sensitive: The pH plays an important role in the survival of animals, including human being. These contain bases to neutralise the excess acids.Example- Magnesium hydroxide (milk of magnesia).Mg(OH)2. Nature provides remedy for the nettle sting in the form of a 'dock' plant, which often grows besides the nettle plants. Even a slight change in pH can result in metabolic acidosis or alkalosis, resulting in severe metabolic complica-tions. Normal Salts: These salts are formed as a result of reaction between strong acid and strong base.Examples: Some Normal salts with their parent acids. Previous question Next question Transcribed Image Text from this Question. Higher education has changed dramatically since Leopold wrote about the importance of field studies in the 1930s. Physical and Biological role: Carbon dioxide (CO2) a form of carbon is an essential element present in the air and in the water for sustaining life on earth. When a person happens to touch the leaves of a nettle plant accidently, the stining hair of nettle leaves inject methanoic acid (HCOOH) into the skin of the person causing burning pain. We know that hydrochloric acid and sodium hydroxide combine with each other to form sodium chloride (NaCl) which in common language is also known as common salt. H2O(I)⟷H+(aq)+OH−(aq)\displaystyle \text{H}_2\text{O}\left(\text{I}\right)\longleftrightarrow\text{H}^{+}\left(aq\right)+… The purpose of a buffer in a biological system is to maintain intracellular and extracellular pH within a very narrow range and resist changes in pH in the Basic Salt: The salt which are formed by partial replacement of hydroxyl (-OH) groups of a polyacidic base by an acid radial are called basic salts. Chemicals can be added to soil to adjust its pH and make it suitable for growing plants. The pH of acidic soil can reach as low as 4 and that of the basic soil can go up to 8.3. Salts-A substance formed by the partial or complete replacement of H+(aq) ions of an acid by a metal or electropositive ion, is called a salt.For Example-(Partial replacement : only one hydrogen atom is replaced)(Complete replacement : Both the hydrogen atom are replaced)Example-. We have moved all content for this concept to for better organization. Jordan, in Encyclopedia of Microbiology (Third Edition), 2009. Use the above point in form of “do you know”. Learn more about the importance, transmission, diagnosis, and control of … 1.1 pH in our digestive system. Chemicals from common saltCommon salt is a raw material for chemicals and play an important role for making various materials of daily use. In our digestive system :Hydrochloric acid produced in our stomach helps the digestion of food without causing any harm to the stomach.But when the amount of the acid goes beyond a certain limit due to indigestion, pain and irritation are created in the stomach. Question 7 Which chemical is produced in stomach? In a marine environment, including an indoor aquarium, a basic pH of 8.1 to 8.4 makes it easier for fish to maintain their own cleanliness and resist illness. We had been Ph.D. students at the same time, both studying science, although in different areas. Question 4 Explain the pH change as the cause of tooth decay? The pH of pure water is 7 b. Common salt is an ionic compound of sodium and chlorine. They belong to the haptophytes, a group of chlorophyll a + c algae possessing a unique organelle, the haptonema, in addition to two smooth flagella. (f) Salt obtained from acetic acid are called "Acetates".Example: CH3COONa, (CH3COO)2Ca, CH3(COO)2Pb.CLASSIFICATION OF SALTSThe salts may be classified in the following ways1. Show transcribed image text. The term, widely used in chemistry, biology, and agronomy, translates the values of the concentration of the hydrogen ion into numbers between 0 and 14. However, when we take food, some food particles remain in the mouth after eating and bacteria present in the mouth produce acids by degradation of food particles. 1.8 X 10-16 M c. 1.8 X 10-7 M d. 1.8 X 10-7 M (4). 3 Self Defence by animals and plants through chemical warfare. The chemical energy is stored in the form of sugars, which are created from water and carbon dioxide. Being basic in nature, antacid react with excess acid in the stomach and neutralises it. You’re about to find out, […] Properties of enzymes (1) Enzymes are complex macromolecules with high molecular weight. But when the amount of the acid goes beyond a certain limit due to indigestion, pain and irritation are created in the stomach. EduRev is a knowledge-sharing community that depends on everyone being able to pitch in when they know something. Now, instructors interested in providing field experiences must negotiate a complex suite of financial, logistical, legal, and attitudinal hurdles that usurp time that could be spent working with students and engaging them in field-based learning … This acid lowers the pH in the mouth, tooth decay starts when the pH of acid formed in the mouth falls below 5.5. In our digestive system : Hydrochloric acid produced in our stomach helps the digestion of food without causing any harm to the stomach. a. No other substance on earth is abundant as water. pH describes the balance between hydrogen ions and hydroxide ions. using search above. The pH scale runs from 0 to 14. Sodium chloride (Common salt/ Table salt) -We know that hydrochloric acid and sodium hydroxide combine with each other to form sodium chloride (NaCl) which in common language is also known as common salt. This charge differential is called polarity and dictates how water interacts … It is the solvent of life. Soil pH is important for crop germination and growth. Question: Describe The Biological Importance Of PH And Buffers. Human blood contains a ‘buffer’ that allows it to maintain its pH at 7.35 to ensure normal functioning of cells. It gives accurate information about importance of ph. Question 8 Which chemical is injected into the skin of a person during an ant’s sting? The acid so produced does not harm the stomach walls, but kills germs and bacteria which enter in our digestive system along with food, thus in a way it protects us from diseases and helps in digestion. A pH of 2 is a strong acid, and it is the approximate pH level found in the stomach. Question 3 What happen if there is an excess of acid in the stomach.How can its effects be cured? pH scaleVariation of pH with the change in concentration of H+(aq) and OH- (aq) ionsThe concentration of H+ (aq) and OH- (aq) ions in pure water is 1 × 10-7 mol litre-1. A solution with a high number of hydroxide ions is basic and has a high pH value. just for education and the Importance of pH in Everyday Life and Salts Class 10 Notes | EduRev images and diagram are even better than Byjus! Yes, the cells of our body will not function properly and our body systems will fail! Question 2 Under what soil conditions do you think a farmer would treat the soil of his field with quicklime? The document Importance of pH in Everyday Life and Salts Class 10 Notes | EduRev is a part of the, are plants and animals ph sensitive, plants and animals ph sensitive, ph value in animals, ph of animals, ph in plants and animals, ph of plants and animals, importance of ph value in human beings and plants. This stage is called acidity. When the hydrogens bind to the oxygen, it creates an asymmetrical molecule with positive charge on one side and negative charge on the other side (Figure 1). The English naturalist Charles Darwin (1809-1882) had developed the Darwinism theory in biological evolution and others, stating that through the natural selection of small, inherited variations that increase the individual's ability to compete, survive, and reproduce, all species of organisms arise and develop.This theory is also known as Theory of … Importance of pH in Everyday Life and Salts Class 10 Notes | EduRev chapter (including extra questions, long questions, short questions, mcq) can be found on EduRev, you can check pH, quantitative measure of the acidity or basicity of aqueous or other liquid solutions. Economics Chapter 5 Consumer Rights – Notes & Study Material, Economics Chapter 4 Globalisation and The Indian Economy – Notes & Study Material. If the pH levels drop below 6.9, it can lead to coma. 2. If the soil is too acidic or basic, the plants grow badly or do not grow at all.The soil pH is also affected by the use of chemical fertilisers in the field.Chemicals can be added to soil to adjust its pH and make it suitable for growing plants. GET QUESTION PAPERS No thanks. Buffer solutions are also important in chemical and biochemical processes where the control of pH is very important. Question 6 How does an antacid work.Name two common antacid? Recently Viewed Questions of Class Biology. 3. By double decomposition of two soluble salt -. Soil pH and plant growth: Most of the plants grow best when the pH of the soil is close to 7. Expert Answer . Filed Under: Acid Bases and Salts, Class 10 Tagged With: antacids, hydrochloric acid, pH, self defence by animals, soil pH, tooth decay. Now let's study about the biological classification. Coccolithophores are particularly noted for their … The main source of common salt (sodium chloride) is the sea water. She has started this educational website with the mindset of spreading Free Education to everyone. All these products are commercially important. Therefore to prevent tooth decay, it is advised to clean the mouth and use toothpastes which are generally basic, for cleaning the teeth. perfect preparation. When we eat food containing sugar, then the bacteria present in our mouth break down the sugar to form acids.This acid lowers the pH in the mouth.Tooth decay starts when the pH of acid formed in the mouth falls below 5.5.This is because then the acid becomes strong enough to attack the enamel of our teeth and corrode it.This sets in tooth decay.The best way to prevent tooth decay is to clean the mouth thoroughly after eating food. Plants and Animals are pH Sensitive: The pH plays an important role in the survival of animals, including human being. It has a slight antiseptic effect. You can also find Importance of pH in Everyday Life and Salts Class 10 Notes | EduRev ppt and other Class 10 slides as well. Respected mam! Water can dissolve most of the biologically important molecules. A higher pH number means the solution is more basic, and fewer hydrogen protons are available in the fluid. I recently saw an old friend for the first time in many years. Soil pH and Plants: Most of the plants grow best when the pH of soil is close to 7. Water is the mother liquid of all forms of life. Many animals and plants protect themselves from enemies by injecting painful and irritating acids and bases into their skin. Squalene has gained massive amount of attraction after being identified in the shark liver extract discovered by Dr. Tsujimoto in 1903, hence it received its name (Squaluss … One gram lipid produces 9.3 kilocalories of heat. The pain can be reduced by applying baking soda paste on the affected region as the acid gets neutralised.In plant kingdom nettle (Bichu Booti) is a herbaceous plant which grows in wild. The pH of saliva is ranges from 6.5 to 7.5. It’s really help full for my exam R.W. If you want Importance of pH in Everyday Life and Salts Class 10 Notes | EduRev It has gotten 11114 views and also has 4.9 rating. Plant disease, an impairment of the normal state of a plant that interrrupts or modifies its vital functions. These contain bases to neutralise the excess acids. Very Strong acids solution can have pH values less than zero and very strong basic solutions can pH greater than 14. What two other digestive enzymes of the same category are secreted by its source gland? Only a narrow range of pH change can be sustained by a living organism, any further change in pH can make the living difficult. 1.2 pH change as the cause of tooth decay. All these materials are bases and hence react with the excess acid present in soil and reduce its acidity. pH IN OUR DIGESTIVE SYSTEM. Class 5 Class 6 Class 7 Class 8 Class 9 Class 10 Class 11 Class 12. (Partial replacement : only one hydrogen atom is replaced), (Complete replacement : Both the hydrogen atom are replaced), A salt is a ionic compound which dissolved in water dissociate to positive ions other than hydrogen ions (H, The salts may be classified in the following ways. The importance of biochemistry in medical science Biochemistry is rapidly expanding, becoming one of the most influential areas of science. The salts which are obtained by the partial replacement of ionisable hydrogen atoms of a polybasic acid by a metal or an ammonium ion are called Acid Salts. The pH of a solution indicates its acidity or alkalinity. If [H+] > 10-7, pH is less than 7 and the solution is acidic. 1. ; Structural component: Lipids are an important constituent of the cell membrane. 1 pH plays very important role in our life through following ways. We’re living organisms and we eat living organisms, so you could probably guess that it has something to tell use about what’s going on all around – and inside – us. Discusses the importance of plants to life on Earth. Thank you so much for clearing my doubt Please update your bookmarks accordingly. (i) Sodium hydroxide: Commercially , sodium hydroxide is also called caustic soda because of its corrosive action on animal and vegetable tissues. Variation by even a tenth of a pH unit may be fatal. On electrolysis, chlorine gas is formed at anode and hydrogen at cathode sodium hydroxide solution is formed near the cathode. This problem has been solved! Squalene is a triterpene which can be found widely in organism varying from humans to plants ().It is a polyunsaturated hydrocarbon with a formula of C 30 H 50 and formed by six isoprene units. As we know our stomach produces gastric juice which contains large amount of hydrochloric acid (pH about 1.4). pH is carefully regulated in human cells and blood. However, different body fluids have different pH values. Chlor-alkali process for obtaining sodium hydroxide -  When we pass electricity through a solution of sodium chloride, commonly called brine. Water is a simple molecule composed of two small, positively charged hydrogen atoms and one large negatively charged oxygen atom. That same glass of cola added to 10 gallons of water with a pH of 7.4 (normal body pH) would bring the overall pH down to 4.6. Very help ful. Thank you so much! The pH is important because it influences the availability of essential nutrients. Describe the biological importance of pH and buffers. It neutralise the excess acid and prevent tooth decay. Introduction. If the soil is too acidic then it is treated with materials like quicklime or slaked lime.If the soil is too alkaline then alkalinity can be reduced by adding decaying organic matter. This means that all aqueous solutions contain both H+(aq) and OH- (aq) ions. Biology is all about studying life and living organisms. Importance of pH. Sorenson, a Danish Chemist in 1909 introduced the concept of measuring the concentration of hydrogen ions (H+(aq)) in a particular solution., The p in pH stands for 'potenz' in German, meaning power. However, when we take food, some food particles remain in the mouth after eating and bacteria present in the mouth produce acids by degradation of food particles. By continuing, I agree that I am at least 13 years old and have read and agree to the. Our stomach produces hydrochloric acid.This dilute hydrochloric acid helps in digesting our food without harming the stomach.Sometimes excess of acid is produced in the stomach.The excess acid in the stomach causes indigestion which produces pain and irritation.In order to cure indigestion, we can take bases called antacids. 1. This means that all aqueous solutions contain both H, (aq) in water is constant (equal to 1 × 10, at 25°C) and is known as ionic product of water (K, The pH plays an important role in the survival of animals, including human being.

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