Calcium carbonate reacts with nitric acid to form calcium nitrate and carbonic acid. The balanced equation for the reaction is;
CaCO3 + 2HNO3 ------ > Ca(NO3)2 + H2CO3
One mole of calcium nitrate and one mole of carbonic acid are produced as products when one mole of calcium carbonate and two moles of nitric acid are combined. Carbonic acid is unstable. So, carbonic acid decomposes into carbon dioxide and water. Bubbles are produced during reaction because of the production of carbon dioxide. The balanced equation is;
CaCO3 + 2HNO3 ------ > Ca(NO3)2 + H2O + CO2
CaCO3 + 2HNO3 ------ > Ca(NO3)2 + H2CO3
One mole of calcium nitrate and one mole of carbonic acid are produced as products when one mole of calcium carbonate and two moles of nitric acid are combined. Carbonic acid is unstable. So, carbonic acid decomposes into carbon dioxide and water. Bubbles are produced during reaction because of the production of carbon dioxide. The balanced equation is;
CaCO3 + 2HNO3 ------ > Ca(NO3)2 + H2O + CO2