JEE Main Chemistry question

Chemistry Equilibrium JEE Main

The relation for calculating pH of a solution containing weak acid and its salt is:

(A)pH = pKa + log([Conjugate base]/[Acid])Correct
(B)pH = pKa − log([Conjugate base]/[Acid])
(C)pH = pKa + log([Salt]/[Acid])
(D)pOH = pKa − log([Conjugate base]/[Acid])

Answer: (A)

Solution

Standard Henderson-Hasselbalch equation.

Question ID VK-136364