Ответ:

9. 2CH4 + O2 → 2 CH3OH (t, p, kat)

СН3ОН+СО → СН3СООН (кат.)

СН3СООН+CH3CH2OH → СН3СООCH2CH3+Н2О

CH3COOCH2CH3+H2O → CH3COOH + CH3CH2OH (H⁺)

CH3COOH + NaOH → CH3COONa + H2O

CH3COONa(безводный) + NaOH → CH4↑ + Na2CO3 ( t)

10. HCHO+Н2→СН3ОН (Ni)

СН3ОН+HCl → CH3Cl+H2O (t=140°C, серная кислота конц.)

2CH3Cl+2Na=CH3-CH3+2NaCl

CH3-CH3+Cl2→C2H5Cl+HCl (hν)

C2H5Cl+NaOH(водн р-р)→C2H5OH+NaCl

ЗС2Н5ОН + 4Na2CrO4 + 7NaOH + 4H2O = 3CH3COONa + 4Na3[Cr(OH)6].

CH3COONa + NaOH → CH4 + Na2CO3 (t)

2CH4 → C2H2 + 3H2 (1500°C)