Х л                                                  200 г

     СО2          +         Ca(OH)2     =     CaCO3      +     H2O

n = 1 моль                                         n = 1 моль

Vm= 22,4 л/моль                              Mr = 100 г/моль

V = 22,4 л                                         m = 100 г

Х л СО2      -    200 г СаСО3

22,4 л СО2   -   100 г СаСО3

V(CO2) = 200 * 22,4 / 100 = 224 л