Question

Identify X and Y in the reaction given below.

${\text{NaHCO}}_3\text{(s)}+\text{HCl}\text{(aq)}\to \text{NaCl}\text{(aq)}+\text{X}+\text{Y}$

• A. X: ${\text{H}}_2\text{O}$, Y: $\text{CO}$
• B. X: ${\text{H}}_2\text{O}$, Y: ${\text{CO}}_2$
• C. X: ${\text{NO}}_2$, Y: $\text{CO}$
• D. X: ${\text{N}}_2$, Y: ${\text{CO}}_2$

Answer 1

The correct option is B X: ${\text{H}}_2\text{O}$, Y: ${\text{CO}}_2$

Bicarbonate salt of a metal reacts with dilute acid to give metallic salt along with carbon dioxide and water. So, sodium bicarbonate reacts with dilute hydrochloric acid to give sodium chloride salt, water and carbon dioxide. The reaction is given below:

${\text{NaHCO}}_3\text{(s)}+\text{HCl(aq)}\to \text{NaCl(aq)}+{\text{H}}_2\text{O(l)}+{\text{CO}}_2\text{(g)}$

So, X and Y are ${\text{H}}_2\text{O}$ and ${\text{CO}}_2$.