Помогите решить цепочку CH3OH-CH3Br-C2H6-C2H5Cl-C2H5OH
1)CH3OH+HBr=CH3Br+H2 2)CH3Br+CH3Br+2Na=C2H6+2NaBr 3)C2H6+Cl2=C2H5Cl+HCl 4)C2H5Cl+H2O=C2H5OH+HCl