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In the reaction : CrO4^(2-) + X rarr Cr...

In the reaction : `CrO_4^(2-) + X rarr `Cr_2O_7^(2-)`, X is

A

`OH^-`

B

`H_2O`

C

`H^+`

D

`O_2`

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In the reaction CrO_4^(2-) ion +x to CrO_2^(-2) ion x is

Consider the reaction: Cr_2O_7^2- + 14H^+ + 6e^- rarr 2Cr^(3+) + 7H_2O What is the quantity of electricity in coulombs needed to reduce 1 mol of Cr_2O_7^(2-) ?

Knowledge Check

  • In the reaction : Cr_(2)O_(7)^(2-)+14 H^(+) +6e to 2Cr^(5+) +7H_(2)O the equivalent weight of Cr_(2)O_(7)^(2-) is :

    A
    FW
    B
    FW/6
    C
    FW/2
    D
    FW/14

  • The oxidation state of chromium in dichromate ion (Cr_2O_7^(2-)) and chromate ion (CrO_4^(2-)) is

    A
    `+ 4 `
    B
    `+7 `
    C
    `+ 5`
    D
    `+ 6`

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