Equilibrium: JEE Main 2026 Chemistry question

JEE Main 2026 · 28 Jan, Morning shift · Q74

JEE Main 202628 Jan, Morning shiftChemistryMediumEquilibrium123× since 2002

Consider the dissociation equilibrium of the following weak acid

\mathrm{HA\rightleftharpoons H^+(aq)+A^-(aq)}

If the pKa of the acid is 4, then the pH of 10 mM HA solution is ______. (Nearest integer) [Given: The degree of dissociation can be neglected with respect to unity]

Your answerType your answer. Integers and decimals are accepted.

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JEE Main 2026 Equilibrium Question with Solution (28 Jan Morning shift, Q74) | JEE Arc