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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 cocenteration are provided. The pair (s) of solution which forms buffer upon mixing is (are)

A

H N O_{3}

and

C H_{3} C O O H

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B

K O H a n d C H_{3} C O O N a

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C

H N O_{3}

and

C H_{3} C O O N a

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D

C H_{3} C O O H a n d C H_{3} C O O N a

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Solution

The correct option is D $C H_{3} C O O H a n d C H_{3} C O O N a$
A buffer solution is an aqueous solution consisting of a mixture of a weak acid and its conjugate base or a weak base and its conjugate acid,
of all options, only in option d there is a pair of a weak acid $(C H_{3} C O O H)$ and salt of its conjugate base $(C H_{3} C O O N a)$ .
Hence, $C H_{3} C O O H a n d C H_{3} C O O N a$ are buffer solution.

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Buffer Solutions

Standard XII Chemistry

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