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7 December, 15:43

Consider the chromate-dichromate equilibrium shown where the chromate ion appears yellow, and the dichromate ion is orange. determine how the equilibrium will be affected by the ph change and fill in the the statements accordingly. note: if you answer any part of this question incorrectly, a single red x will appear indicating that one or more of the terms are placed incorrectly.

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  1. 7 December, 18:04
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    Cr2O7^2 - (aq) + 14H+double arrow2Cr^3 + (aq) + 6e

    Explanation:

    From the equation, it is evident that the equilibrium between dichromate ions depends on the pH. Low pH favours the formation of the dichromate ion this the solution appears orange. At higher pH, the equilibrium shifts towards the formation of the chromate ion this the solution appears yellow.
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