$2K+Cl_2\to 2KCl$
$2K+2HCl\to 2KCl+H_2$
$K_2O+2HCl\to 2KCl+H_2O$
$KOH+HCl\to KCl+H_2O$
$2KClO_3\buildrel{{t^o}}\over\to 2KCl+3O_2$
$Cl_2+2KOH\to KCl+KClO+H_2O$
$KClO+2HCl\to KCl+Cl_2H_2O$
$KClO_3+6HCl\to KCl+3Cl2+3H_2O$
$CuCl_2+2KOH\to Cu(OH)_2+2KCl$
$FeCl_3+3KOH\to Fe(OH)_3+3KCl$