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.

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 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.
${C H}_{3} C O O N a + H_{2} O ⇌ {C H}_{3} C O O H + {N a}^{+} + {O H}^{(-)}; K_{1}$
${C H}_{3} {C H}_{3} C O O N a + H_{2} O ⇌ {C H}_{3} {C H}_{2} C O O H + {N a}^{+} + O H; K_{2}$
Again a buffer solution has always has the ability to keep $p H$ almost same reacting with small quantities of $H^{+}$ or ${O H}^{(-)}$ .
So both Assertion and reason are correct but reason is not the correct explanation of assertion.

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