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Which of the following does not/do not r...

Which of the following does not/do not represent the correct equivalent mass of `Cr_2O_7^(2-)` in the reaction `Cr_2O_7^(2-)+14H^+ 6e^- rarr 2Cr^(3+) +7H_2O`?

A

The molar mass of dichromate

B

One third of the molar mass of dichromate

C

One sixth of the molar mass of dichromate

D

One half of the molar mass of dichromate

Text Solution

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The correct Answer is:
A, B, D
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The structure of Cr_2O_7^(2-)

For the following redox reaction the coefficients of the reactants for balanced reaction are Cr_2O_7^(2-) + SO_3^(2-) + H^+ rarr Cr^(3+) + SO_4^(2-) + H_2O

Knowledge Check

  • In the dichromate anion (Cr_2O_7^(2-))

    A
    all Cr - O bonds are equivalent
    B
    6 Cr - O bonds are equivalent
    C
    3 Cr - O bonds are equivalent
    D
    no bonds in `Cr_2O_7^(2-)` are equivalent.

  • The value of n in the equation, Cr_(2)O_(7)^(2-) +14 H^(+)+ne^(-) to 2Cr^(3+) + 7H_(2)O is :

    A
    2
    B
    3
    C
    4
    D
    6

  • The value of n in the following equation is Cr_(2)O_(7)^(2-)+14H^(+)+"ne"to2Cr^(3+)+7H_(2)O+

    A
    6
    B
    2
    C
    3
    D
    4

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