A-C2H5OH

Б-C2H5HO

В-C2H5COOH

Г-CH2(Cl)-CH2-COOH

Д-CH2=CH-COOH

C2H5OH+[O]=C2H5HO(окисление)

C2H5HO+[O]=C2H5COOH(окисление)

CH3-CH2-COOH+Cl2=(свет)=CH2(Cl)-CH2-COOH+HCl

CH2(Cl)-CH2-COOH+KOH(спирт)= CH2=CH-COOH+KCl+H2O

CH2=CH-COOH+H2O=CH2(OH)CH2COOH