Question

Assertion :The compound sodium hydrogen carbonate, $NaH{CO}_3$, can act as either a Bronsted base or a Bronsted acid. Reason: The hydrogen carbonate ion can either accept or donate a proton.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

Bronsted Acid : which can give $H^{+}$

Bronsted Base : which can accept $H^{+}$

So, ${NaHCO}_3\rightleftharpoons {CO}_3^{2-}+H^{+}+{Na}^{+}$

also ${HCO}_3^{-}+H^{+}\rightleftharpoons H_2{CO}_3$