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2MnO(4)^(-)+5H(2)O(2)+6H^(+) rarr 2Z+5O(...

`2MnO_(4)^(-)+5H_(2)O_(2)+6H^(+) rarr 2Z+5O_(2)+8H_(2)O`. In this reaction `Z` is

A

`Mn^(+2)`

B

`Mn^(+4)`

C

`MnO_2`

D

Mn

Text Solution

Verified by Experts

The correct Answer is:
A
`2MnO_(4)^(Theta)+5H_2O_(2)+6H^(+)rarr2Mn^(2+)+5O_2+8H_2O`
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Knowledge Check

  • 2MnO_(4)^(-) + 5H_(2)O_(2) + 6H^(+) rarr 2Z + 5O_(2) + 8H_(2)O Identify Z in the above reaction.

    A
    `Mn^(2+)`
    B
    `Mn^(4+)`
    C
    `Mn`
    D
    `MnO_(2)`

  • A solution of H_(2)O_(2) is titrated against a solution of KMnO_(4) . The reaction is : 2MnO_(4)^(-)+5H_(2)O_(2)+6H^(+) to 2Mn^(2+)+5O_(2)+8H_(2)O If it requires 46.9 mL of 0.145 M KMnO_(4) to oxidise 20 g of H_(2)O_(2) , the mass percentage of H_(2)O_(2) in this solution is :

    A
    2.9
    B
    29
    C
    21
    D
    4.9

  • For the redox reaction, MnO_(4)^(-) + C_(2)O_(4)^(2-) + H^(+) rarr Mn^(2+) + CO_(2) + H_(2)O the correct coefficients of the reactants for the balanced reaction are

    A
    `{:(MnO_(4)^(-),C_(2)O_(4)^(2-),H^(+),),(2,5,16,):}`
    B
    `{:(MnO_(4)^(-),C_(2)O_(4)^(2-),H^(+),),(16,5,2,):}`
    C
    `{:(MnO_(4)^(-),C_(2)O_(4)^(2-),H^(+),),(5,16,2,):}`
    D
    `{:(MnO_(4)^(-),C_(2)O_(4)^(2-),H^(+),),(2,16,5,):}`