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In a redox reaction, dichromate ion (Cr(...

In a redox reaction, dichromate ion `(Cr_(2)O_(7)^(2-))` is reduced to `Cr^(3+)` ion, the equivalent mass of `K_(2)Cr_(2)O_(7)` in this reaction is :

A

`("molecular mass")/(3)`

B

`("molecular mass")/(6)`

C

`("molecular mass")/(1)`

D

`("molecular mass")/(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`Cr_(2)O_(7)^(2-)+14H^(+)+6e^(-) to 2Cr^(3+)+7H_(2)O`
Change in oxidation number =6
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