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JEE Main Chemistry question

ChemistryEquilibriumJEE Main

The rapid change of pH near the stoichiometric point of an acid base titration is the basis of indicator detection. pH of the solution is related to the ratio of the concentration of the conjugate acid (HIn) and base () forms of the indicator given by the expression [Manipal 2007]

Answer: (D)

Solution

By the Henderson-Hasselbalch relation applied to the indicator equilibrium,

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Question ID VK-135716