Which of the following statements is correct about an aqueous solution of an acid and of a base ?
(i) Higher the pH, stronger the acid
(ii) Higher the pH, weaker the acid
(iii) lower the pH, stronger the base
(iv) Lower the pH, weaker the base

Options

A. (i) and (iii)
B. (ii) and (iii)
C. (i) and (iv)
D. (ii) and (iv)

Answer

D

Explanation

Strength of acid increases with decrease in pH value from 7 whereas strength of base increases with increase in pH value from 7.