麻烦老师解答:请从下图中选出必要的

2025-05-21 11:32:52
推荐回答(1个)
回答(1):

(1 )阴极:2H + +2e - =H 2 ↑;阳极:2Cl - -2e - =Cl 2 ↑  
(2 )H F G   D E C
(3 )KI淀粉溶液变蓝;Cl 2 +2I - = I 2 +2Cl -