$2C_2H_5OH+2Na\to 2C_2H_5ONa+H_2$
$2C_2H_5OH+2K\to 2C_2H_5OK+H_2$
$C_2H_5OH+H_2SO_{4\text{đặc lạnh}}\to C_2H_5OSO_3H+H_2O$
$C_2H_5OH+HCl_{\text{bốc khói}}\to C_2H_5Cl+H_2O$
$C_2H_5OH+HBr_{\text{bốc khói}} \to C_2H_5Br+H_2O$
$C_2H_5OH+CuO\xrightarrow{{t^o}} CH_3CHO+Cu+H_2O$