PT: C2H4 + Br2 -> C2H4Br2
a, Theo pt+ đề bài: nBr2 = nC2h4 =0,5 mol
=> mC2H4 = 0,5.(12.2+4)= 14 g
b,PT: C2H4 + 3O2 -> 2CO2 + 2H2O
Theo pt+đề bài: nC2H4 = 2nH2O = 1 mol
=>VH2O=22,4 l
Học tốt!
a) PTHH: \(C_2H_4+Br_2\rightarrow C_2H_4Br_2\left(1\right)\)
Theo PTHH: \(n_{Br_2}:n_{C_2H_4}=1:1\)
\(\Rightarrow n_{C_2H_4}=n_{Br_2}=0,5\left(mol\right)\)
\(\Rightarrow m_{C_2H_4}=0,5.28=14\left(g\right)\)
b) PTHH: \(C_2H_4+3O_2\underrightarrow{t^0}2CO_2+2H_2O\)
Theo PTHH: \(n_{C_2H_4}:n_{H_2O}=1:2\)
\(\Rightarrow n_{H_2O}=n_{C_2H_4}.2=0,5.2=1\left(mol\right)\)
\(\Rightarrow V_{H_2O}=1.22,4=22,4\left(l\right)\)