The correct statement about the preparation of from is:

Question

The correct statement about the preparation of  from  is:

Canvas Classes · Accepted Answer

Conversion of chromate to dichromate:

In alkaline medium:  (yellow, chromate) is stable.
In acidic medium:  (orange, dichromate) is stable.

Reaction:

Or equivalently:

Acidification (with dilute  or HCl) converts yellow chromate to orange dichromate.

Answer: Option (3)

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