The oxidation state of Cr in the final product formed by the reaction of KI and acidified potassium dichromate solution is

The oxidation state of Cr in the final product formed by the reaction of KI

 and acidified potassium dichromate solution is

  1. A

    +4

  2. B

    +6

  3. C

    +2

  4. D

    +3

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    Solution:

    Cr2O72+4H++6I2Cr3++7H2O+3I2

    Cr2O72O.N. of 2Cr=+12; 2Cr3+O.N.=+6

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