Решить, , : 3 сн3-che=> ch3-ch2cl=> ch2=ch2=> ch3-ch2oh => cl2=ch-ch=ch2

1)CH3-CH3+CI2=   CH3-CH2CI+HCI
2)CH3-CH2CI+KOH(спиртовой)=  CH2=CH2+KCI+H2O
3)CH2=CH2+H2O=CH3-CH2OH
4)2CH3-CH2OH(425 градусов,Cu,ZnO)=СH2=CH-CH=CH2+2H2O+H2