InterviewSolution
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InterviewSolution
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When orange solution containing Cr_(2)O_(7)^(2-) ion is treated with an alkali, a yellow solution is formed and when H^(+) ions are added to yellow solution, an orange solution is obtained. Explain why does this happen? |
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Answer» Solution :orange COLOUR `Cr_(2)O_(7)^(2-)` ion and yellow colour `CrO_(4)^(2-)` are inter-convertible depending on the PH of MEDIUM. `underset(("orange colour"))(Cr_(2)O_(7)^(2-)) underset(H^(+))overset(""^(-)OH)HARR underset(("yellow colour"))(CrO_(4)^(2-))` |
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