In text Questions page number 28 Chapter 2: Acids, Bases and Salts Science Class 10 solutions are avalable at ourwebsite to help the students. In text Questions page number 28 is solved by our expert teachers. You can get ncert solutions and notes for class 10 chapter 2 absolutely free. NCERT Solutions for class 10 Science Chapter 2: Acids, Bases and Salts will definitely help in improving your marks in CBSE Board examinations.
In text Questions page number 28
Question 1. You have two solutions, A and B. The pH of solution A is 6 and pH of solution B is 8. Which solution has more hydrogen ion concentration? Which of this is acidic and which one is basic?
Answer: The pH value of a solution varies from 0 to 14. The pH value is 0 for a very strong acid and the pH value is 14 for a very strong base. The pH value is 7 for a neutral solution. Hence A is acidic and B is basic in nature. The concentration of hydrogen ion decreases from pH value of 0 to 14 therefore A has more hydrogen ion concentration.
Question 2. What effect does the concentration of H+(aq) ions have on the nature of the solution?
Answer: If the concentration of H+(aq) ions is increased(>10-7) then the solution become acidic and if the concentration of H+(aq) ions is decreased(<10-7) then the solution become basic in nature.
Question 3. Do basic solutions also have H+(aq) ions ? If yes, then why are these basic?
Answer: Yes the basic solution also has H+(aq) ions but it is less than the concentration of (OH-)ions.
Question 4. Under what soil condition do you think a farmer would treat the soil of his fields with quick lime (calcium oxide) or slaked lime (calcium hydroxide) or chalk (calcium carbonate)?
Answer: If the soil is acidic in nature which is not suitable for agriculture then the farmer would treat the soil with quick lime (calcium oxide) or slaked lime (calcium hydroxide) or chalk (calcium carbonate).
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