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What is the effect of increasing pH on K...

What is the effect of increasing `pH` on `K_2Cr_2O_7` solution?

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In aqueous solution, we have

When `pHlt4` (acidic medium) it exists as `Cr_2O_7^(2-)` and colour is orange When `pHgt7` (Basic medium), it exists as `CrO_4^(2-)` and colour is yellow.
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Knowledge Check

  • What would be the normality of a 0.1 M K_(2)Cr_(2)O_(7) solution used as a oxidizing agent of Pb^(2+)?

    A
    0.1N
    B
    0.6N
    C
    0.4N
    D
    0.2N

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