Question

Compound 'X' in the aqueous form reacts with ammonium carbonate to give an acidic gas.
What is compound 'X'?
A) Calcium hydroxide
(B) Ethanoic acid
-) Sodium hydroxide
(D) Sulphuric acid​

Answer 1

The answer is Calcium hydroxide

Answer 2

Answer:

Here the compound X is sulphuric Acid which is aqueous form reacts with ammonium carbonate to give an acidic gas.

Explanation:

Compound X on reaction with ammonium carbonate $(NH_4CO_3)$ to form a weak acidic gas. The X compound should be of any mineral acids in aqueous form.

Let's take sulphuric acid which is one among option of all the four given. Sulphuric acid on reaction with ammonium carbonate gives ammonium sulphate $(NH_4SO_4)$ and Carbon-di-oxide and the water. Ammonium Sulfate is a weak acid gas solution.  

$\bold{N H_{4} C O_{3}+H_2 S O_ 4=\left(N H_{4}\right) S O_{4}+H_{2} O+C O_{2}}$