JEE Main Chemistry question

Chemistry Equilibrium JEE Main

The pH of an aqueous solution of of concentration (M) is given by [WB-JEE 2011]

(A)
(B)
(C)
(D)Correct

Answer: (D)

Solution

For a salt of weak acid and strong base, pH=7+\frac12pK_a+\frac12\log C=\frac12pK_w+\frac12pK_a+\frac12\log C (since ).

Question ID VK-135697