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A black precipitate remaining from the separation of Cr3+ and Fe2+ ions from Ni2+ ion is dissolved in HCl and HNO3. Some NH3 is added, followed by several drops of dimethylglyoxime.

A colorless solution results. what do you think has happened?

What might have went wrong?

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  • Category:- Chemistry
  • Reference No.:- M9500678

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