Question

(a) What does the pH of a solution signify? Three solution A, B and C have pH values of 6, 4 and 10 respectively. Which of the solutions is highly acidic?
(b) A farmer has found that the pH of soil in his fields is 4.2. Name any two chemical materials which he can mix with the soil to adjust its pH.

Answer 1

Answer:

a) pH determines the strength of acid or base.4 is highly acidic

b)He can mix lime water to it to make it neutral or he can also use some other base...

Answer 2

Explanation:

• (a) The hydrogen ion concentration of a solution is signified by pH.
• (b) For adjusting the soil’s pH, the farmer uses chalk or slaked lime as solution B has the lowest pH of 4 and is highly acidic.
• It is to be observed that pH is the measurement for knowing the acidic or basic nature of the water-based solution.
• Basic solutions have higher pH, whereas the acidic solutions have lower pH.