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In acidic medium, dichromate ion oxidize...

In acidic medium, dichromate ion oxidizes ferrous ion to ferric ion. If the gram molecular weight of potassium dichromate is ` 294 g`, is gram equivalent weight is `"______" g`.

A

294

B

127

C

49

D

24.5

Text Solution

Verified by Experts

The correct Answer is:
C
In acidic medium `K_(2)Cr_(2)O_(7)` acts as a strong
O.A and itself reduces to `Cr^(3+)`
`K_(2)overset(+6)(Cr_(2))O_(7)+6e^(-)rarroverset(+3)(2Cr^(3+))`
`:.` Eq. mass of `K_(2)Cr_(2)O_(7)=("Mol. mass")/(6)`
`=(296)/(6) ~~ 49`.
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