$CuCl_2+2NaOH\to Cu(OH)_2+2NaCl$
$2NaOH+CO_2\to Na_2CO_3+H_2O$
$2Al+2NaOH+2H_2O\to 2NaAlO_2+3H_2$
$NH_4Cl+NaOH\to NH_3+NaCl+H_2O$
$2Al+Fe_2O_3\buildrel{{t^o}}\over\to Al_2O_3+2Fe$
$2Al+3CuCl_2\to 2AlCl_3+3Cu$
$4Al+3CO_2\buildrel{{t^o}}\over\to 2Al_2O_3+3C$