PTHH:
2H2 + O2 ---to---> 2H2O
C2H4 + 3O2 ---to---> 2CO2 + 2H2O
CO2 + Ca(OH)2 ---> CaCO3 + H2O
nCaCO3 = \(\dfrac{30}{100}=0,3\left(mol\right)\)
-> nCO2 = 0,3 (mol)
-> nC2H4 = \(\dfrac{0,3}{2}=0,15\left(mol\right)\)
%VC2H4 = \(\dfrac{0,15}{\dfrac{5,6}{22,4}}=60\%\)
%VH2 = 100% - 60% = 40%