Question

A compound X' of sodium is used as an antacid and it decomposes on strong heating. Write the balanced chemical equation to represent the decomposition of 'X'.

Answer 1

1. As we know Sodium bicarbonate$\left({\mathrm{NaHCO}}_3\right)$ is used as an antacid and undergoes decomposition reaction on strong heating.
2. It gives out Sodium carbonate$\left({\mathrm{Na}}_2{\mathrm{CO}}_3\right)$, Carbon dioxide$\left({\mathrm{CO}}_2\right)$, and Water$\left({\mathrm{H}}_2\mathrm{O}\right)$.
3. So, compound X is sodium bicarbonate.

Decomposition reaction of Sodium bicarbonate:

$2{\mathrm{NaHCO}}_3\left(\mathrm{s}\right)\stackrel{\mathrm{heat}}{\to }{\mathrm{Na}}_2{\mathrm{CO}}_3\left(\mathrm{s}\right)+{\mathrm{CO}}_2\left(\mathrm{g}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)$

Hence, the compound X is Sodium bicarbonate and above-mentioned reaction is the balanced chemical equation of decomposition of Sodium bicarbonate.