помогите, вопрос двойки и тройки

1-в, 2-б, 3-б, 4-г, 5- б, 6-а, 7-в, 8- а. 9-C₆H₆ + HNO₃ = C₆H₅NO₂ + H₂OC₆H₅NO₂ + 3H₂S = C₆H₅NH₂ +3S↓ + 2H₂O10- C₂H₅OH + HCl = C₂H₅Cl + H₂OCH₃COOH + C₂H₅OH = CH₃COOC₂H₅ + H₂O2CH₃COOH +2Na = 2CH₃COONa + H₂11-CH₃COOC₅H₁₁