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Blue colour of CuSO(4) solution is disch...

Blue colour of `CuSO_(4)` solution is discharge slowly when an iron rod is dipped into it. Why?

Text Solution

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Zinc lies below copper in the electrochemical series and can therefore, release electrons to the `Cu^(2+)` ions. As a result, Zn is oxidised while `Cu^(2+)` ions are reduced. Since the concentration of `Cu^(2+)` ions in the solution decreases, the blue colour of the solution is slowly discharged.
`Zn(s) +Zn^(2+)(aq) to Zn^(2+)(aq) +Cu(s)`
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Knowledge Check

  • Colour of I_2 solution is discharged , when solution of 'X' is added . 'X' is

    A
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    B
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    C
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    D
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