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

What is the effect of increasing pH on the colour of `K_(2)Cr_(2)O_(7)` solution ?

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When pH is less than 7 (acidic medium), `K_(2)Cr_(2)O_(7)(Cr_(2)O_(7)^(2-))` has orange colour. In the basic medium with pH more than 7, the colour of the solution changes to yellow due to the formation `K_(2)CrO_(4)(CrO_(4)^(2-) " ion")`.
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What is the effect of increasing pH on K_2Cr_2O_7 solution?

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