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Question 600421
JEE Chemistry · Medium

Chemical and Ionic Equilibrium: Indicator MCQ

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IndicatorMediumQuestion 600421

Question

An acid-base indicator is chosen such that its pKIn equals:
  1. A
    7 always
  2. B
    pH at the equivalence point
    Correct
  3. C
    pKa of the acid
  4. D
    14 − pH of base

Correct answer

pH at the equivalence point

Explanation

The indicator should change colour at the equivalence point of the titration. Choose an indicator whose pKIn ≈ pH at equivalence point.

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