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In balancing the half reaction CN^(ө)r...

In balancing the half reaction
`CN^(ө)rarrCNO^(ө)`(skeltan)
The number of electrons that must be added is

A

`0`

B

`1` on the right

C

`1` on the left

D

`2` on the right

Text Solution

Verified by Experts

The correct Answer is:
D
` {:(,CN^(-),to,CNO^(-)),("O.N. of nitrongen", 4+x=-1,,4+x-2=-1),(,x=-5,,x=-3):}`
`CN^(-)` is thus oxidised. Thus, two electrons are lost.
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