判断反应<img class="kfformula" src="20200706/1594024312213717.png" data-latex="{2FeCl}_{2}" width="57" height="31"/>+<img class="kfformula" src="20200706/1594024312918638.png" data-latex="{Cl}_{2}" width="50" height="36"/>==<img class="kfformula" src="20200706/1594024312394991.png" data-latex="{2FeCl}_{3}" width="80" height="33"/>的反应类型( )。