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At 298 K, the standard reduction potenti...

At 298 K, the standard reduction potential are: `1.33 V` for `Cr_(2)O_(7)^(2-) | Cr^(3+)`,
`1.36 V` for `Br_(2)|Br^(-)` and 0.54V for `I_(2)|I^(-)`.
At pH = 4, `Cr_(2)O_(7)^(2-)` is expected to oxidise?
Assume `[Cr^(3+)]` = `[Cr_(2)O_(7)^(2-)]`= 1M.

A

`Cl^(-) and Br^(-)`

B

`Cl^(-), Br, I^(-)`

C

`Br^(-), I^(-)`

D

`I^(-) only`

Text Solution

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The correct Answer is:
D
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