Đặt : \(n_{C2H4}=a\left(mol\right),n_{C2H2}=b\left(mol\right)\rightarrow a+b=\dfrac{13,44}{22,4}\left(1\right)\)
\(C_2H_4+Br_2\rightarrow C_2H_4Br_2\)
\(C_2H_2+2Br_2\rightarrow C_2H_2Br_4\)
Ta có : \(n_{Br2}=0,8.1=0,8\left(mol\right)\rightarrow a+2b=0,8\left(2\right)\)
\(\left(1\right),\left(2\right)\rightarrow a=0,4,b=0,2\)
\(\rightarrow\left\{{}\begin{matrix}\%V_{C2H4}=\dfrac{0,4.22,4}{13,44}.100\%=66,67\%\\\%V_{C2H2}=100\%-66,67\%=33,33\%\end{matrix}\right.\)