第84页 - 创新优化学案九年级化学沪教版

$\text {3Fe}+2\text {O}_2\xlongequal[\ \ \ \ \ \ ]{点燃}\text {Fe}_3\text {O}_4$

$\text {Fe+2HCl}\xlongequal[\ \ \ \ \ \ ]{}\text {FeCl}_2+\text {H}_2↑$

$\text {Fe+CuSO}_4\xlongequal[\ \ \ \ \ \ ]{}\text {FeSO}_4+\text {Cu}$