Question

Sodium hydroxide absorbs carbon dioxide to form ______.

Options

• sodium chloride and water

• sodium carbonate and water

• sodium oxide and water

• sodium oxide and hydrogen

Answer 1

Sodium hydroxide absorbs carbon dioxide to form sodium carbonate and water.

Explanation:

Sodium hydroxide (NaOH) is a strong alkali (base) and carbon dioxide (CO₂) is an acidic oxide. Their neutralisation reaction forms salt (Na₂CO₃) and water.