1)
CH3-CH3+CL2-->CH3-CH2CL
CH3-CH2CL-->CH2=CH2+HCL
CH2=CH2 + Cl2 = CH2Cl-CH2Cl CH2Cl-CH2Cl + 2KOH = CH2OH-CH2OH + 2KCl
2)HO-CH2-CH2-OH+2HCL-->CH2CL-CH2CL+2H2O
CH2CL-CH2CL+KOH-->CH≡CH+2KCl+2H2O
CH≡CH+2H2-->CH3-CH3
CH3-CH3+CL2-->CH3-CH2CL+HCL
CH3-CH2CL-->CH2=CH2+HCL
CH2=CH2 + Cl2 = CH2Cl-CH2Cl CH2Cl-CH2Cl + 2KOH = CH2OH-CH2OH + 2KCl