Salt having pH of its aqueous solution greater than 7, is:

N H_{4} C l

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N a C l

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C H_{3} C O O N a

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N H_{4} N O_{3}

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Solution

The correct option is C $C H_{3} C O O N a$

$C H_{3} C O O N a$ is a salt of weak acid and strong base, so its aqueous solution has its pH > 7.
$p H = 7 + \frac{1}{2} (p K_{a} + logC)$ , where C is the concentration of the salt.

$N H_{4} C l, N H_{4} N O_{3}$ are the salts of strong acid and weak base, so these have their pH < 7.

$N a C l$ is a salt of strong acid and strong base so, its pH = 7.

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Similar questions

Give one example each of a salt which gives an aqueous solution having :

(a) pH less than 7

(b) pH equal to 7

p H

p H

p H

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