In the following reactions, \(\mathrm{ZnO}\) is respectively acting as a/an :
(a) \(\mathrm{ZnO + Na_2O \rightarrow Na_2ZnO_2}\)
(b) \(\mathrm{ZnO + CO_2 \rightarrow ZnCO_3}\)
(a) \(\mathrm{ZnO + Na_2O \rightarrow Na_2ZnO_2}\)
(b) \(\mathrm{ZnO + CO_2 \rightarrow ZnCO_3}\)
Show Hint
- base and base
- acid and acid
- acid and base
- base and acid
The Correct Option is C
Solution and Explanation
(a) \(\mathrm{Na_2O}\) is a basic oxide, so \(\mathrm{ZnO}\) reacts with it as an acid to form the zincate \(\mathrm{Na_2ZnO_2}\).
(b) \(\mathrm{CO_2}\) is an acidic oxide, so \(\mathrm{ZnO}\) reacts with it as a base to form the salt \(\mathrm{ZnCO_3}\).
Hence (a) acid, (b) base.
Answer: (3) acid and base
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