1.
$CH_3COONa+ NaOH \buildrel{{t^o}}\over\to CH_4+ Na_2CO_3$
$Al_4C_3+ 12H_2O \to 4Al(OH)_3+ 3CH_4$
$C_3H_8\buildrel{{t^o, xt}}\over\to CH_4+ C_2H_4$
2.
$C_2H_5OH \buildrel{{170^oC, H_2SO_4}}\over\to C_2H_4+ H_2O$
$C_4H_{10}\buildrel{{t^o, xt}}\over\to C_2H_4+ C_2H_6$
$C_2H_6\buildrel{{t^o, xt}}\over\to C_2H_4+ H_2$
3.
$CaC_2+ 2H_2O \to Ca(OH)_2+ C_2H_2$
$2CH_4\buildrel{{1500^oC}}\over\to C_2H_2+ 3H_2$
4.
$C_2H_4+ H_2O \buildrel{{H^+, t^o}}\over\to C_2H_5OH$
$C_2H_5Cl+ KOH \buildrel{{t^o}}\over\to C_2H_5OH+ KCl$
$C_6H_{12}O_6\buildrel{{\text{men rượu}, 30-35^oC}}\over\to 2CO_2+ 2C_2H_5OH$
