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Which of the following changes requires ...

Which of the following changes requires a reducing agent ?

A

`H_(3)AsO_(3)rarrHAsO_(4)^(2-)`

B

`BrO_(3)^(ө)rarrBrO^(ө)`

C

`CrO_(4)^(2-)rarrCr_(2)O_(7)^(2-)`

D

`Al(OH)_(3)rarr[Al[OH)_(4)]^(ө)`

Text Solution

Verified by Experts

The correct Answer is:
B
`4e^(-)+BrO_(3)^(ө)rarrBrO^(ө)`
`x-6= -1, x-2=-1`
`x=5, x=+1`
The reduction undergoes reduction, i.e., it acts as oxidising agent, so it requires a reducing agent.
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