Question

What happens when metal hydrogen carbonates reacts with an acid. Identify the gas produced. Give two confirmatory tests for the gas produced

Answer 1

Acid + Metal Hydrogen Carbonate ----------> Salt + Water + Carbon Dioxide

Example: NaHCO3 (s) + HCl (aq) → NaCl (aq) + CO2 (g) + H2O (l)

The gas produced is Carbon dioxide

The test for the Gas :

When we pass the gas through limewater (Ca(OH)2) it turns it milky.

When we pass the gas to a burning splinter. The fire goes out.

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