calcium carbonate + nitric acid ---calcium nitrate + water + carbon dioxide After asking the question i found the answer on another web page so posted the answer on here in case it may be of use to...
you get carbon dioxide if you mix any acid with a carbonate aswell as water and calcium nitrate.
2HNO3(aq) + CaCO3(s) = Ca(NO3)2(s) + H2O(l) + CO2(g)
Ca is a 2+ ion, and the NO3 is only a - ion,...
Let us see with hydrochloric acid. CaCO3 + 2HCl -> CaCl2 + CO2 + H2O The usual acid/base neutralization reaction with a boost. Produces a salt, water and as an added bonus, carbon dioxide gas.