Question

Magnesium carbonate and hydrochloric acid react to form a gas that turns limewater milky

Answer 1

We know that when metal reacts with acid it gives out salt, water and carbon dioxide.

So when magnesium carbonate is reacted with HCl, it gives out Mg(CO3)2, H2O and CO2.

The reaction is:

Mg(CO3)2 + HCl —> MgCl2 + H2O + CO2

HOPE IT HELPS YOU.