Question

State your observation in given case when dilute hydrochloric acid is added to sodium carbonate crystals

Answer 1

Sodium carbonate crystals on reaction with dilute HCl forms sodium chloride, water, and carbon dioxide gas, which is evolved with brisk effervescence. This is a neutralization reaction as sodium carbonate is a basic salt, while hydrochloric acid is an acid. The chemical equation for this reaction is as follows:

Na₂CO₃ + 2HCl → 2NaCl +H₂O + CO₂