Đáp án:

Giải thích các bước giải:

1. $2CH_4\xrightarrow{1500^oC,\text{ làm lạnh nhanh}}C_2H_2+3H_2$

2. $3C_2H_2\xrightarrow{t^o,xt}C_6H_6$

3. $C_6H_6+Br_2\xrightarrow{t^o, Fe}C_6H_5Br+HBr$

4. $C_6H_5Br+NaOH\xrigtharrow{}C_6H_5OH+NaBr$

5. $C_6H_5OH+3Br_2\xrightarrow{}C_6H_2OHBr_3+3HBr$

6. $C_2H_2+H_2\xrightarrow{t^o, Pd/PdCO_3}C_2H_4$

7. $C_2H_4+H_2\xrightarrow{t^o, Ni}C_2H_6$

8. $C_2H_6\xrightarrow{t^o, xt}C_2H_4+H_2$

9. $C_2H_6+Cl_2\xrightarrow{á/skt, 1:1}C_2H_5Cl+HCl$

10. $C_2H_4+H_2O\xrightarrow{H_2SO_4\text{ loãng}}C_2H_5OH$

11. $C_2H_5OH\xrightarrow{170^oC, H_2SO_4đặc}C_2H_4+H_2O$

12. $C_2H_5OH+Na\xrightarrow{}C_2H_5ONa+\dfrac{1}{2}H_2$

13. $C_2H_5OH+CuO\xrightarrow{t^o}CH_3CHO+Cu+H_2O$

14. $CH_3CHO+H_2\xrightarrow{t^o,Ni}CH_3CH_2OH$

15. $CH_3CHO+2AgNO_3+3NH_3+H_2O\xrightarrow{t^o}CH_3COONH_4+2Ag+NH_4NO_3$

16. $C_2H_5OH+O_2\xrightarrow{\text{men rượu}}CH_3COOH+H_2O$

17. $2CH_3CHO+O_2\xrightarrow{t^o,xt}2CH_3COOH$

18. $CH_3COOH+NaOH\xrightarrow{}CH_3COONa+H_2O$

19. $CH_3COOH+C_2H_5OH⇆CH_3COOC_2H_5+H_2O$ ( đk: t độ, $H_2SO_4$ đặc)

20. $C_2H_4+Br_2\xrightarrow{}C_2H_4Br_2$