1.

Describe the preparation of potassium dichromate from iron chromite ore. What is the effect of increasing pH on a solution of potassium dichromate ?

Answer»

Solution :On increasing PH of POTASSIUM dichromate solution (i.e., on adding alkali), it CHANGES to potassium chromate.
`2K_(2)Cr_(2)O_(7)+2KOH to 2K_(2)CrO_(4)+H_(2)O`


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