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Question

Assertion :A mixture of sodium acetate and sodium propionate forms a buffer solution. Reason: A buffer solution reacts with small quantities of hydrogen or hydroxyl ions and keeps the pH almost same.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
A mixture of sodium acetate and sodium propionate forms a buffer solution.
CH3COONa+H2OCH3COOH+Na++OH();K1
CH3CH3COONa+H2OCH3CH2COOH+Na++OH;K2
Again a buffer solution has always has the ability to keep pH almost same reacting with small quantities of H+ or OH().
So both Assertion and reason are correct but reason is not the correct explanation of assertion.

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