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For the reaction 3Br(2)+6OH^(ө)-ltBr^(...

For the reaction
`3Br_(2)+6OH^(ө)-ltBr^(ө)+BrO_(3)^(ө)+3H_(2)O`
Equivalent weight of `Br_(2)` (molecular weitht M) is

A

`(M)/(2)`

B

`(M)/(10)`

C

`((M)/(2)+(M)/(10))`

D

`((M)/(6))`

Text Solution

Verified by Experts

The correct Answer is:
C
`Br_(2)` disproprtions (simultaneous oxidation and reduction), its equivalent weight is the sum of equivalent weights of the two half reactions.
`2e^(-)+Br_(2)rarr2Br^(ө)(x=2)` (reduction)
`Br_(2)rarr2BrO_(3)^(ө)+10e^(-)(x=10)("oxidation")`
`2x=0, 2x-12= -2`
`2x=10`
`:. Ew=(M)/(2)+(M)/(10)`
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