H2+Cl2-->2HCl e=Cl2; a=HCl
2HCl+CaCO3--->CaCl2 +CO2+H2O b=CaCl2, c=CO2
CO2+Ca(OH)2--->CaCO3+H2O
1mol H2 <------>1molCO2
10moli H2.....10 moli CO2
d)
1mol H2....(2moliHCl)......1molH2O
10moliH2..........................10moliH2O= 180g H2O
din ec a 3-a rezulta tot 10 moli H2O deci 180g
in total 180+180=360 (g)H2O
1molH2......................1mol h2O