Answer:
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)