a,
$CH_3COONa+NaOH\xrightarrow{{CaO, t^o}} CH_4+Na_2CO_3$
$2CH_4\xrightarrow{{1500^oC}} C_2H_2+3H_2$
$C_2H_2+H_2\xrightarrow{{Pd/PbCO_3, t^o}} C_2H_4$
$C_2H_4+H_2O\xrightarrow{{t^o, H^+}} C_2H_5OH$
$C_2H_5OH\xrightarrow{{H_2SO_4 đ, 170^oC}} C_2H_4+H_2O$
$n CH_2=CH_2\xrightarrow{{t^o, p, xt}} (-CH_2-CH_2-)_n$
b,
$C_4H_{10}\xrightarrow{{t^o, xt}} C_2H_6+C_2H_4$
$C_2H_4+H_2O\xrightarrow{{H^+, t^o}} C_2H_5OH$
$C_2H_5OH\xrightarrow{{H_2SO_4 đ, 170^oC}} C_2H_4+H_2O$
$C_2H_4\xrightarrow{{t^o, xt}} C_2H_2+H_2$
$C_2H_2+H_2O\xrightarrow{{HgSO_4, H_2SO_4, t^o}} CH_3CHO$
c,
$C_2H_6+Cl_2\xrightarrow{{as}} C_2H_5Cl+HCl$
$C_2H_5Cl+KOH\xrightarrow{{t^o}} C_2H_5OH+KCl$
$C_2H_5OH\xrightarrow{{H_2SO_4 đ, 170^oC}} C_2H_4+H_2O$
$C_2H_4\xrightarrow{{t^o, xt}} C_2H_2+H_2$
$2C_2H_2\xrightarrow{{CuCl, NH_4Cl, t^o}} CH\equiv C-CH=CH_2$
$CH\equiv C-CH=CH_2\xrightarrow{{Pd/PbCO_3, t^o}} CH_2=CH-CH=CH_2$
$nCH_2=CH-CH=CH_2\xrightarrow{{t^o, p, xt}} (-CH_2-CH=CH-CH_2-)_n$ (polibutađien)
$3C_2H_2\xrightarrow{{C, 600^oC}} C_6H_6$
$C_6H_6+Cl_2\xrightarrow{{Fe, t^o}} C_6H_5Cl+HCl$
