Write balanced molecular and net ionic equations for the following reactions, and identify the gas formed in each: solid magnesium carbonate reacts with an aqueous solution of perchloric acid.

Balanced molecular equation

MgCO3 (s) + 2HClO4 (aq) → Mg (ClO4) 2 (aq) + H2O (l) + CO2 (g)

Net ionic equation

MgCO3 (s) + 2H + (aq) → Mg2 + (aq) + H2O (l) + CO2 (g)

Explanation:

The molecular equation involves the reaction of magnesium carbonate and aqueous solution of perchloric acid.

Magnesium carbonate = MgC03

perchloric acid = HClO4

MgCO3 (s) + HClO4 (aq) → Mg (ClO4) 2 (aq) + H2O (l) + CO2 (g)

To balance the equation we make sure the number of atom of element on the left hand side (reactant) is equal to the right hand side (product).

MgCO3 (s) + 2HClO4 (aq) → Mg (ClO4) 2 (aq) + H2O (l) + CO2 (g)

The number of atom on both sides is balanced when you put coefficient of 2 in front of perchloric acid

The net ionic equation is usually balanced by both mass and charge. The overall charge is neutral for the net Ionic equation.

MgCO3 (s) + 2H + (aq) → Mg2 + (aq) + H2O (l) + CO2 (g)