Can a solution of 1 M copper sulphate be stored in a vessel made of nickel metal? Given that `E_(Ni,Ni^(2+))^(@)=+0.25" volt ",E_(Cu,Cu^(2+))^(@)=-0.34` volt.
Can nickel spatula be used to stir a solution of copper sulphate? Support your answer with a reason.
`E_(Ni^(2+)//Ni)^(@)=-0.25V,E_(Cu^(2+)//Cu)^(@)=+0.34V`.

Explanation

To determine whether a 1 M copper sulfate solution can be stored in a vessel made of nickel metal and whether a nickel spatula can be used to stir it, we need to analyze the electrochemical potentials of the involved reactions.

### Step-by-Step Solution:

1. **Identify the Half-Reactions**:
The relevant half-reactions for copper and nickel are:
- For copper:
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