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Buffer Solutions

Aqueous solut...

Question

Aqueous solutions 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 concentrations are provided. The pair(s) of solutions which form a buffer upon mixing is(are):

A

H N O_{3}

and

C H_{3} C O O H

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B

KOH and

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

and

C H_{3} C O O N a

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Solution

The correct options are
C $H N O_{3}$ and $C H_{3} C O O N a$
D $C H_{3} C O O H$ and $C H_{3} C O O N a$
Buffer solutions mean which can resist a change of $p H Acidic Buffer(Acid + salt) Basic Buffer (Base+salt)$ ,
$H N O_{3} + C H_{3} C O O N a C H_{3} C O O H + C H_{3} C O O N a$ $H N O_{3} ⟶ weak acid C H_{3} C O O H ⟶ weak acid$

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