Filed Under: Acid Bases and Salts, Class 10 Tagged With: antacids, hydrochloric acid, pH, self defence by animals, soil pH, tooth decay About Mrs Shilpi Nagpal Author of this website, Mrs … The main things we need to know about pH and pOH are. Question 8 Fresh milk has a pH of 6>how do you think the ph would change as it turns into curd? pH and the pH Scale The pH scale ranges from 0 to 14. For example, pH 4 is ten times more acidic than pH 5 and 100 times (10 times 10) more acidic than pH … Last Updated on May 4, 2020 By Mrs Shilpi Nagpal Leave a Comment. Question 5 Name the scientist who discovered pH scale?Question 6 Two solutions A and B  have pH values of 3 and 9.Which will turn phenolphthalein from colourless to pink? Afraid of a subject or a topic? A pH greater than 7 is basic. Universal indicator … More acidic a solution is lesser will be its pH. Don’t worry, let us know and we will help you master it. Solution with pH=8,9,10 are weak base. Solution with pH=11,12,13,14 are strong base. More basic a solution is more will be its pH. Class 10 Chemistry Acids Bases Salts pH scale A scale developed to measure the concentration of hydrogen ion in a solution is known as pH scale where p in pH implies ‘ potenz ’ in German. pH = – log [H 3 O+] From the above relation, the concentration of [H 3 O+] can be written as [H 2 O+] = 1 x 10 -pH in 1909 S.P.L Sorenson, a Danish biochemist devised a scale known as pH to represents the H + ion concentration of an aqueous solution. Question 7 What is the pH of neutral solution? Question 4 The pH of a solution is 5.What will be its action on blue and red litmus? pH is a figure expressing the acidity or alkalinity of a solution on a logarithmic scale on which 7 is neutral. The pH of saliva ranges from 6.5-7.5. A pH of 7 means it is a neutral solution. Learn more about pH. When we take a drop of the test solution and place it on universal indicator paper, the paper turns a particular colour. A pH of more than 7 means the solution is basic. If [H+] < 10-7, pH is more than 7 and the solution is basic. Anything with a pH … The pH scale, which measures from 0 to 14, provides an indication of just how acidic or basic a substance is. When pH of rain water is less than 5.6, it is called acid rain that lowers the pH … pH is a numeric scale in chemistry that is used to determine whether the substance is acidic, basic or neutral in nature. Solution with pH=0,1,2,3 are strong acids. pH, quantitative measure of the acidity or basicity of aqueous or other liquid solutions. Acid is produced in fatigued muscle : As a result of physical exercise, stiffness and pain in the … Thus, mathematically, pH may be expressed as. Your email address will not be published. Question 3 Three solutions A,B and C have pH values of 6,4 and 10.Which of the solution is highly acidic? It is used to determine the strength of … If [H+] = 10-7, pH is 7 and the solution is neutral. Conc NaOH pH=14, Filed Under: Acid Bases and Salts, Class 10 Tagged With: acidic solution, basic solution, neutral solution, pH scale, sorenson, strength of acid and base. The pH scale … Class X Science Notes For Acids, Bases and Salts SYLLABUS Their definitions in term of furnishing of H+ and OH- ions, General properties, examples and uses, Concept of pH scale (Definition relating to logarithm not required), Importance of pH … If you're behind a web filter, … Salts are made when acids and bases react together. Verify your number to create your account, Sign up with different email address/mobile number, NEWSLETTER : Get latest updates in your inbox, Need assistance? The pH runs from 0 (strongly acidic) through 7 (neutral) to 14 (strongly alkaline). The pH scale ranges from 0 to 14. The values lower than 7 are more acidic while higher values more alkaline. 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