Question

A spatula full of sodium carbonate is taken in a test tube and 2 mL of dilute ethanoic acid is added to it.

Metal compound A reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle. Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride.

A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains

A student adds dilute hydrochloric acid to a test tube containing Sodium carbonate and bubbles are seen forming immediately.