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Question

Phenolphthalein is not a suitable indicator for:

A
NaOHHCl titration
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B
Na2CO3HCl titration
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C
NaOHH2SO4 titration
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D
KOhHNO3 titration
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Solution

The correct option is A NaOHHCl titration

Phenolphthalein is a basic indicator which can identify the differences only in the basic pH range.

As shows no colour for an acidic and neutral range of pH

NaOH+HClpH7.

So Phenolphthalein can’t be used here.


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