a) \(n_{Br_2}=0,1.2=0,2\left(mol\right)\)
PTHH: \(CH_2=CH_2+Br_2\rightarrow CH_2Br-CH_2Br\)
0,2<-------0,2
\(\Rightarrow V_{C_2H_4}=0,2.22,4=4,48\left(l\right)\)
b) PTHH: \(CH\equiv CH+2Br_2\rightarrow CHBr_2-CHBr_2\)
0,1<--------0,2
\(\Rightarrow n_{C_2H_4}-n_{C_2H_2}=0,1\left(mol\right)\)