Question

please tell me Q 13 ​

Answer 1

Question

Assertion : Sodium hydrogen carbonate is an acidic salt.

Reason : The pH of a aqueous solution of sodium hydrogen carbonate is more than 7.0

Answer

Assertion is false and reason is true.

Explanation

Sodium hydrogen carbonate is a basic salt. Hence the assertion is false. Since it's basic, it's pH is more than 7. Hence reason is true.

$\sf NaOH + H_2CO_3 \rightarrow NaHCO_3 + H_2O$

Sodium hydroxide reacts with dilute carbonic acid to give sodium hydrogen carbonate. Since sodium hydroxide is strong base and carbonic acid is weak acid, the salt formed is basic in nature.

Answer 2

Answer:

Assertion : Sodium hydrogen carbonate is an acidic salt.

Reason : The pH of a aqueous solution of sodium hydrogen carbonate is more than 7.0

Answer

Assertion is false and reason is true.

Explanation

Sodium hydrogen carbonate is a basic salt. Hence the assertion is false. Since it's basic, it's pH is more than 7. Hence reason is true.

\sf NaOH + H_2CO_3 \rightarrow NaHCO_3 + H_2ONaOH+H

2

CO

3

→NaHCO

3

+H

2

O

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