Question

CH4-C2H2-C2H4-C2H5OH-C2H5Br-C2H4

Answer 1

2СH4 =1500C=> HC≡CH+3H2

HC≡CH + H2( 1 моль)   = катализатор Линдлара, t, p=>   H2C=CH2

H2C=CH2 + H2O =H+=> CH3CH2OH

CH3CH2OH + HBr  => CH3CH2Br + H2O  

CH3CH2Br + KOH =спирт, t=> H2C=CH2↑+ KBr + H2O

Удачи!