Identify the salt formed from strong acid and weak base.

N a_{2} S O_{4}

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(N H_{4})_{2} S O_{4}

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C H_{3} C O O N H_{4}

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K_{2} C O_{3}

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Solution

The correct option is B $(N H_{4})_{2} S O_{4}$
$N a O H + H_{2} S O_{4} \to N a_{2} S O_{4} + H_{2} O$
(Salt of strong acid and strong base)

$N H_{4} O H + H_{2} S O_{4} \to (N H_{4})_{2} S O_{4} + H_{2} O$
(Salt of weak base and strong acid)

$C H_{3} C O O H + N H_{4} O H \to C H_{3} C O O N a + H_{2} O$
(Salt of weak acid and weak base)

$K O H + H_{2} C O_{3} \to K_{2} C O_{3} + H_{2} O$
(Salt of strong base and weak acid)

Thus, $(N H_{4})_{2} S O_{4}$ is a salt from strong acid and weak base.

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Similar questions

Q. Assertion :Aqueous solution of

C H_{3} C O O N H_{4}

is exactly neutral.

(K_{a} = K_{b})

Reason:

C H_{3} C O O N H_{4}

is a salt of weak acid and strong base.

Q. Assertion :Mixture of

{C H}_{3} C O O H

and

{C H}_{3} C O O {N H}_{4}

is not a buffer solution. Reason: Acid buffer contains the mixture of weak acid and its salt with strong base.

Question 05.
Sodium carbonate is a basic salt because it is a salt of
(a) strong acid and strong base
(b) weak acid and weak base
(c) strong acid and weak base
(d) weak acid and strong base

Q. An example of salt of weak acid and weak base and an ezample for salt of strong acid and strong base

Assertion: A mixture of

C H_{3} C O O H

and

C H_{3} C O O N H_{4}

is not a buffer solution.

Reason: An acidic buffer contains the mixture of a weak acid and its salt with a strong base.

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