Assertion :In the titration of strong acid and strong base, phenolphthalein is used as suitable indicator. Reason: In the titration of strong acid and strong base, the equivalence point lies is the pH range of $(3.0 - 10.5)$ and phenolphthalein have pH range of $(8.0 - 9.8)$ .

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
From figure it can be seen that, in the titration of strong acid and strong base, the equivalence point lies is the pH range of $(3.0 - 10.5)$ and phenolphthalein have pH range of $(8.0 - 9.8)$ .

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Choose the correct option.

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