CaCO3 + 2HAc = Ca(Ac)2 + CO2↑ + H2O；
CaCO3 + 2HAc = Ca2+ + 2Ac- + CO2↑ + H2OAc？醋酸的缩写HAc；将Ac改为CH3COO即可。醋酸是ch3cooh吧。。你写出来CaCO3+ 2CH3COOH =(CH3COO)2 Ca + CO2↑ + H2O；CaCO3 + 2CH3COOH = Ca2+ + 2(CH3COO)- + CO2↑ + H2O我明白了