PTHH: \(C_2H_4+Br_2\rightarrow C_2H_4Br_2\)
Ta có: \(\left\{{}\begin{matrix}n_{hhkhí}=\dfrac{4,48}{22,4}=0,2\left(mol\right)\\n_{C_2H_4Br_2}=\dfrac{18,8}{188}=0,1\left(mol\right)\end{matrix}\right.\)
\(\Rightarrow n_{C_2H_4}=n_{CH_4}=n_{Br_2}=0,1\left(mol\right)\)
\(\Rightarrow\left\{{}\begin{matrix}V_{CH_4}=V_{C_2H_4}=0,1\cdot22,4=2,24\left(l\right)\\m_{Br_2}=0,1\cdot160=16\left(g\right)\end{matrix}\right.\)
PT: \(C_2H_4+Br_2\rightarrow C_2H_4Br_2\)
a, Ta có: \(n_{hhk}=\dfrac{4,48}{22,4}=0,2\left(mol\right)\)
\(n_{C_2H_4Br_2}=\dfrac{18,8}{188}=0,1\left(mol\right)\)
Theo PT: \(n_{C_2H_4}=n_{C_2H_4Br_2}=0,1\left(mol\right)\)
\(\Rightarrow\left\{{}\begin{matrix}\%V_{C_2H_4}=\dfrac{0,1}{0,2}.100\%=50\%\\\%V_{CH_4}=50\%\end{matrix}\right.\)
b, Theo PT: \(n_{Br_2}=n_{C_2H_4Br_2}=0,1\left(mol\right)\)
\(\Rightarrow m_{Br_2}=0,1.160=16\left(g\right)\)
Bạn tham khảo nhé!