А) 5СH3-CH2-CHO + 2KMnO4 + 3KOH = 5CH3-CH2-COOK + 2MnO2 + 2H2O
CH3-CH2-COOK + KOH = C2H6 + K2CO3
C2H6 + Br2 = C2H5Br + HBr
C2H5Br + KOH(в) = C2H5OH + KBr
C2H5OH = С2H4 + H2O
б) CH3-COOH + NaOH = CH3-COONa + H2O
2CH3COONa + 2H2O = C2H6 + 2CO2 + 2NaOH + H2 (электролиз)
C2H6 + Cl2 = C2H5Cl + HCl
C2H5 Cl + KOH(c) = C2H4 + KCl + H2O
C2H4 + H2O = C2H5OH
в)CH4 + Cl2 = CH3Cl + HCl
CH3Cl + C6H6 = C6H5-CH3 + HCl
5C6H5CH3 + 6KMnO4 + 9H2SO4 = C6H5-COOH + 3K2SO4 + 6MnSO4 + 11H2O
C6H5-COOH + KOH = C6H5COOK + H2O
C6H5COOK + KOH = C6H6 + K2SO4
г) C6H12O6 = 2C2H5OH + 2CO2 (спиртовое брожение)
C2H5OH = C2H4 + H2O
C2H4 + Cl2 = C2H4Cl2
CC2H4Cl2 + 2KOH(c) = C2H2 + 2KCl + 2H2O
3CH≡CH ---(t кат).---> C6H6