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Can you store copper sulphate solution in a zinc pot? |
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Answer» Solution :Zinc is more reactive than COPPER. Hence, it displaes copper from copper sulphate solution as follows: `Zn(s)+CuSO_(4)(AQ)toZnSO_(4)(aq)+Cu(s)` Thus, zinc reacts with `CuSO_(4)` solution. Hence, we cannot store copper sulphate solution in a zinc POT. Alternatively, `E_(Zn^(2+),Zn)^(@)=-0.76,E_(Cu^(2+),Cu)^(@)=0.34V` To check WHETHER zinc reacts with `CuSO_(4)` solution i.e., whether the following reaction takes place or not `Zn(s)+CuSO_(4)(aq)toZnSO_(4)(aq)+Cu(s)`, Find the EMF of this cell reaction. the cell MAY be represented as `Zn|Zn^(2+)||Cu^(2+)|Cu` `E_(cell)^(@)=E_(Cu^(2+),Cu)^(@)-E_(Zn^(2+),Zn)^(@)=0.34V-(-0.76V)=1.10V` As `E_(cell)^(@)` is positive, the reaction takes place and we cannot store. |
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