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Buffer Solutions

Aqueous solut...

Question

Aqueous solution of $H N O_{3}, K O H, C H_{3} C O O H$ and $C H_{3} C O O N a$ of identical concentration are provided. The pair(s) of solution which forms buffer upon mixing is (are)

H N O_{3} and C H_{3} C O O H

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K O H and C H_{3} C O O N a

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H N O_{3} and C H_{3} C O O N a

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C H_{3} C O O H and C H_{3} C O O N a

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Solution

The correct option is D $C H_{3} C O O H and C H_{3} C O O N a$
A buffer solution is an aqueous solution consisting of a mixture of a weak acid and its conjugate base or weak base and its conjugate acid.

Of all options, only in option "D", there is a pair of a weak acid and salt of its conjugate base.

Hence, Option "D" is the correct answer.

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Standard XII Chemistry

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