In balancing the half-reactionCN- → CNO- skeletalthe number of electrons that must be added is

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1 on the right

1 on the left

2 on the right

answer is D.

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Detailed Solution

CN- → CNO- O.N. of nitrogen 4 + x = -1 4 + x -2 = -1 x = - 5 x = - 3CN- is thus oxidized. Thus, two electrons are lost.

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