Question

C2H5OH-----H2SO4, t>180 x1+HBr x2 +NA x3 AlCl3,T x4 T----->-H2 x5

Answer 1

1) CH2=CH2
2) CH3CH2Br
3) C4H10
4) CH3-CH(CH3)-CH3
5) CH2=CH(CH3)-CH3