У 7 задания часть Б на второй картинке
C2H6+Cl2=C2H5Cl+HCl C2H5Cl+NaOH=C2H5OH+NaCl C2H5OH+O2= CH3-COOH+H2O CH3COOH+C5H11OH=CH3COOC5H11+H2O CH3COOC5H11+H2O=CH3COOH +C5H11Oh C5H11OH+8O2=5CO2+6H2O