X+HCl→ZnCl2+H2O+CO2
Find X and balance the equation.
ZnCO3 + 2HCl →ZnCl2 + H2O + CO2
Acids react with metal carbonates and bicarbonates to produce carbon dioxide gas, which is indicated by its strong effervescence. The other products are salt and water. X is zinc carbonate.
ZnCO3+2HCl→ZnCl2+H2O+CO2