\(n_{C2H4}=\frac{2,24}{22,4}=0,1\left(mol\right)\)
a) \(PTHH:C_2H_4+3O_2\underrightarrow{^{to}}2CO_2+2H_2O\)
Pư: _______ 0,1____0,3___0,2____________ (mol)
\(\Rightarrow V_{O2}=0,3.22,4=6,72\left(l\right)\)
b) \(\frac{V_{O2}}{V_{kk}}=20.100=\frac{1}{5}\)
\(\Rightarrow V_{kk}=5V_{O2}=5.6,72=33,6\left(l\right)\)