Equivalent weight of K2Cr2O7 in the following reaction is Cr2O72- + Fe2+ → Fe3++  Cr3+(M = molar mass of K2Cr2O7)

Equivalent weight of K2Cr2O7 in the following reaction is 

Cr2O72- + Fe2+  Fe3++  Cr3+

(M = molar mass of K2Cr2O7)

  1. A

    M3

  2. B

    M6

  3. C

    M5

  4. D

    M4

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    Solution:

     

     

     

     

     

     

     

     

    Balance Cr oxidation number of Cr-atom on each side

    Thus, equivalent weight of

    K2Cr2O7 = molar  masschange in ox.state = M6

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