2ЗаданиеСН3-СН3+Cl2=(свет)=СН3-СН2-Сl + HClСН3-СН2-Сl+KOH(спирт.)--> СН2=СН2+КCl+H2OСН2=СН2+Н2О =>(Kt)> СН3-СН2-ОНСН3-СН2-ОН =>(Kt)> CH3-CHO +H2CH3-CHO+CH3-CHO =>> CH3-CH(OH)-CH2-CHOCH3-CH(OH)-CH2-CHO+H2=>>CH3-CH(OH)-CH2-CH2(OH)CH3-CH(OH)-CH2-CH2(OH) =>(Kt)>CH2=CH-CH=CH2CH2=CH-CH=CH2 + Br2 =>> CH2(Br)-CH=CH-CH2(Br)CH2(Br)-CH=CH-CH2(Br) + H2=>>CH2(Br)-CH2-CH2-CH2(Br)CH2(Br)-CH2-CH2-CH2(Br)+Zn=>>ZnBr2+C4H8(циклобутан)C4H8(циклобутан)+Н2 = CH3-CH2-CH2-CH3.