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The rapid change of pH near the stoichio...

The rapid change of `pH` near the stoichiometric point of an acid-base titration is the basic of indicator detection. `pH` of the solution is related to the ratio of the concentration of conjugate acid `(Hin)` and base `(In^(-))` forms of the indicator by the expression

A

`log""(["In"^-])/(["HIn"])=pK_("In")-pH`

B

`log""(["HIn"])/(["In"^-])=pK_("In")+pH`

C

`log""(["HIn"])/(["In"^-])=pH-pK_("In")`

D

`log""(["In"^-])/(["HIn"])=pH-pK_("In")`

Text Solution

Verified by Experts

The correct Answer is:
D
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