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Balancing Redox in Basic

APCHEM-VULZSQ

Consider the following unbalanced reaction that is occurring in basic solution:

$$MnO_4 \ ^-+ CN^-→ MnO_2+ CNO^-$$

When the reaction is balanced, which of the following is the value of the coefficient for the hydroxide ion produced in this reaction?

A

1

B

2

C

3

D

4