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
(A) (i) and (iii)
(B) (ii) and (iii)
(C) (i) and (iv)
(D) (ii) and (iv)
Answer
Low pH corresponds to acidic solutions whereas high pH corresponds to basic solutions .
Therefore, the lower the pH, the stronger is the acid and the weaker the base
So, the correct option is (d) - (ii) and (iv)