What causes the color of copper sulphate to change when an iron nail is dipped into it?
Md Ariful Islam
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Dr. Md Rushad Rahman
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When iron (Fe) and copper sulphate (CuSO4) solution react, they undergo a single displacement reaction, also known as a substitution reaction, to form solid copper (Cu) and aqueous iron sulphate (FeSO4). The iron can be solid or aqueous but the copper sulphate must be aqueous in order to facilitate the reaction.
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