In the reaction, `NO_(2)^(-)+OC l to NO_(3)^(-)+Cl^(-)`, the oxidation state of chlorine

Options

A. Does not change
B. Changes from +1 to -1
C. Changes from -2 to -1
D. Changes from 0 to -1

Answer

B

Explanation

Oxidation state of chlorine in `OC l^(-) and Cl^(-)` is:
`{:(OC l^(-),Cl^(-)),(-2+x=-1,thereforex=-1),(thereforex=+1,):}`
Hence, the oxidation state of chlorine changes from +1 to -1.