Chromium Flashcards by Scott Wooldridge | Brainscape

Q

Cr3+

A

Appear green
Pale purple sol

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Q

Cr2O7 2-

A

Orange sol
Oxidising agent - orange to green

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Q

CrO4 2-

A

Yellow
Formed when oxidising (Cr(OH)6)3-

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Q

CrO4 2- => Cr2O7 2-

A

Yellow to orange
Add H+
Add OH- to reverse

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