The chemical reaction is Ni(s) + FeSO4(aq) → NiSO4(aq) + Fe(s). The oxidation number of iron increases from +2 to 0, while nickel remains at 0. Nickel reacts with FeSO4 to form nickel sulfate and metallic iron.
The chemical reaction for a strip of nickel metal put into a beaker of 0.052 M FeSO4 can be represented as:
Ni(s) + FeSO4(aq) → NiSO4(aq) + Fe(s)
In this reaction, the nickel metal reacts with FeSO4 to form nickel sulfate and metallic iron. The oxidation number of nickel remains unchanged at 0, while the oxidation number of iron increases from +2 to 0. This reaction is consistent with the activity series, where nickel is above iron, indicating its higher reactivity.