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Explain why Cu^+ ion is not stable in ...

Explain why `Cu^+` ion is not stable in aqueous solution ?

Text Solution

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`Cu^(2+)(aq)` is much more stable `Cu^(+)` ( aq). This is because although second ionization enthalpy of copper is large bu `Delta_(hyd)` H for `Cu^(2+) (aq)` is much more negative than that for `Cu^(+)(aq)` and hence it more than compensates for the second ionization enthalpy of copper. Therefore, many copper (I) compounds are unstable in aqueous solution and undergo disproportionation as follows `: 2Cu^(+)rarr Cu^(2+) + Cu`.
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Explain why Cu^(+) is not stable in aqueous solution ?

Knowledge Check

  • Assertion : Cu^+ ion is not stable in aqueous solution. Reason : Cu^+ contains 3d-filled subshell.

    A
    Assertion and reason both are correct statements and reason is correct explanation for assertion.
    B
    Assertion and reason both are correct statements but reason is not correct explanation for assertion.
    C
    Assertion is correct statement but reason is wrong statement.
    D
    Assertion is wrong statement but reason is correct statement

  • Assertion Cu^(o+) ion is unstable in aqueous solution, whereas Fe^(2+) ion is stable Cu^(o+) disproportionate in aqueous solution .

    A
    If both `(A)` and ` (R )` are correct and `(R )` is the correct explanation of `(A ) ` .
    B
    If both `(A)` and ` (R )` are correct and `(R )` is the correct explanation of `(A ) ` .
    C
    If`(A)` is correct, but `( R )` is incorrect .
    D
    Both `(A)` and `(R ) ` are incorrect .

  • Which of the following ions is the most stable in aqueous solution ? (At . No . Ti = 22, V = 23, Cr = 24, Mn = 25)

    A
    `Ti^(3+)`
    B
    `Mn^(3+)`
    C
    `Cr^(3+)`
    D
    `V^(3+)`

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