1.

What is the effect of increasing pH on K_2Cr_2O_7 solution?

Answer»

Solution :On INCREASING PH, orange colour of `K_2Cr_2O_7` solution changes to yellow DUE to the FOLLOWING reaction :
`Cr_2O_7^(2-) + 2OH^(-) rarr 2CrO_(4)^(2-) + H_(2)O`


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