Na2CO3 +2HCl ===2NaCL +CO2 +H2O
106 44
m x1
106/44 =m/x1 x1=44m/106
CaCO3 +2HCl ===CaCl2 +CO2 +H2O
100 44
m x2
100/44=m/x2 x2=44m/100
现在m=10,所以碳酸钙得到的二氧化碳多.