4支试管中分别盛有相同质量分数的稀盐酸,将A、B、C和锌四种金属

4支试管中分别盛有相同质量分数的稀盐酸,将A、B、C和锌四种金属分别同时放入其中。小明将观察到的现象形象地画了一幅卡通图(如下图所示),每个卡通人物表示一种金属,周围的小黑点表示反应中生成的气体。

(1)A、B、C三种金属的活动性由强到弱的顺序可能是  
(2)B是常见金属,写出B和盐酸反应的化学方程式  

答案

(1)A>B>C
(2)Fe+2HCl===FeCl2+H2↑解析:

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