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In an acidic medium dichromate ion oxidi...

In an acidic medium dichromate ion oxidises ferrous ion to ferric ion. If the gram molecular mass of potassium dichromate is 294 g, its gram equivalent mass is........ Grams.

A

294

B

127

C

49

D

24.5

Text Solution

Verified by Experts

In acidic medium `Cr_(2)O_(7)^(2-)` ion acts as oxidising agent
`Cr_(2)O_(7)^(2-)+14H^(+)+6e^(-)rarrCr^(3+)+7H_(2)O`
Equivalent mass of `K_(2)Cr_(2)O_(7)`
`="(Molecularmass)"/(6)=(294)/(6)=49`
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DINESH PUBLICATION-REDOX REACTIONS-Multiple Choice Question Bank(MCQB)
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