为了验证铁和铜的金属活动性顺序强弱,可以设计以下方法【简要概述、现象和结论】

(1)选用两种金属和一种试剂(2)选用一种金属和一种试剂
2025-03-15 23:22:08
推荐回答(2个)
回答1:

(1) 试剂:铁粉、铜片、稀盐酸。
实验步骤:分别向两只试管中加入等量盐酸。将等量铁粉与铜片分别置于稀盐酸中。
反应现象:铁粉与盐酸反应产生气泡。铁粉逐渐溶解。无色溶液变成浅绿色。 铜片与盐酸不发生反应。无明显现象。
结论:铁的活动性比铜更强。

(2) 试剂:铁丝、CuSO4溶液。
实验步骤:取一只试管。倒入适量CuSO4溶液。将铁片置于CuSO4溶液中。
反应现象:铁丝表面出现红色固体。蓝色溶液变黄色。
结论:铁的活动性比铜更强。

回答2:

1 选用两种金属和一种试剂
FE CU 加入稀盐酸中 FE会反应 有气泡 CU不反应

2选用一种金属和一种试剂

FE加入CUSO4里面 有红色的铜单质产生

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