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Which of the following reactions should ...

Which of the following reactions should be balanced in basic medium?

A

`NH_(3)+MnO_(4)^(ө)rarrMnO_(2)+NO_(2)`

B

`Cr(OH)_(2)+I_(2)rarrCr(OH)_(3)+2I^(ө)`

C

`HNO_(3)+Fe^(3+)+NO_(2)`

D

`H_(2)O_(2)+Fe^(3+)rarrO_(2)+Fe^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
A, B
In (a), `MnO_(4)^(ө)rarrMnO_(2)` occurs only in basic medium In (b), `Cr(OH)_(2)rarrCr(OH)_(3)` occurs only in basic medium. `(c )` and `(d)` occur only is acidic medium.
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