A visible change is observed when a strip of iron is placed in an aqueous...

Chemistry

WAEC 2001

A visible change is observed when a strip of iron is placed in an aqueous solution of

A. FeSO₄
B. ZnSO₄
C. CuSO₄
D. MgSO₄

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Correct Answer: Option C

Explanation

The blue color of the copper sulfate solution fades and eventually turns a pale green or greenish blue color. This is because the iron displaces the copper from the copper sulfate solution, forming ferrous sulfate (FeSO4). A visible change is observed when a strip of iron is placed in an aqueous solution of copper sulfate (CuSO4)

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