Question

Baking soda on _______ gives sodium carbonate, water and carbon dioxide.

• A. Oxidation
• B. Decomposition
• C. Reduction
• D. Displacement

Answer 1

The correct option is B Decomposition

The reactions in which a single substance splits into two or more simple substances under suitable conditions are known as decomposition reactions.
On being heated, baking soda undergoes decomposition to give sodium carbonate, water, and carbon dioxide. The reaction occurs as follows:

$2{\text{NaHCO}}_3\text{(s)}\to {\text{Na}}_2{\text{CO}}_3\text{(s)}+{\text{H}}_2\text{O}\text{(g)}+{\text{CO}}_2\text{(g)}$