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When aqueous NaOH is added to an aqueous...

When aqueous NaOH is added to an aqueous solution of chromium (III ) ions, a green blue precipitate is first formed which re - dissolves to give a green solution. The green colour is due to

A

`[Cr(H_(2)O)_(6)]^(3+)`

B

`CrO_(4)^(2-)`

C

`[Cr(OH)_(4)]^(-)`

D

`[Cr(OH)_(3)(H_(2)O)_(3)]`

Text Solution

Verified by Experts

The correct Answer is:
C
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