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Nilam Binoya Datta
Asked: 2022-11-10T17:26:09+05:30 In:

In the following redox reactionn,
`Cr_(2)O_(7)^(2-) + Fe^(2+) to Fe^(3+) + Cr^(3+)`
1 mole of `Cr_(2)O_(7)^(2-)` oxidises.
A. 1 mole of `Fe^(2+)`
B. 3 mole of `Fe^(2+)`
C. 4 moles `Fe^(2+)`
D. 6 moles of `Fe^(2+)`

In the following redox reactionn,
`Cr_(2)O_(7)^(2-) + Fe^(2+) to Fe^(3+) + Cr^(3+)`
1 mole of `Cr_(2)O_(7)^(2-)` oxidises.
A. 1 mole of `Fe^(2+)`
B. 3 mole of `Fe^(2+)`
C. 4 moles `Fe^(2+)`
D. 6 moles of `Fe^(2+)`
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1 Answer

  1. Correct Answer – D
    `underset(“1 mole”)(Cr_(2)O_(7)^(2-)) + underset(“6 mole”)(6Fe^(2+)) + 14H^(+) to 2Cr^(3+) + 7H_(2)O + 6Fe^(3+)`

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