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2609540
Chromium [Cr2O7]2-
Description
A quick overview of the reactions of Chromium
No tags specified
chemistry
aqa
chem5
transition metals
chromium
chemistry
transition metals
a-level
Mind Map by
Chad Astbury
, updated more than 1 year ago
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Created by
Chad Astbury
about 9 years ago
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Resource summary
Chromium [Cr2O7]2-
Orange Solution
<-----Acid Alkali----->
[CrO4]2-
Yellow Solution
<-----H2O2
[Cr(OH)6]3-
Green Solution
XS NaOH----->
Cr(H2O)3(OH)3
Green Precipitate
Zn + HCl OR Fe2+ acidified with HCl
[Cr(H2O)6]3+
Green Solution
XS NH3
[Cr(NH3)6]3+
Purple Solution
<-----O2 Zinc and HCl----->
[Cr(H2O)6]2+
Blue Solution
Limited NaOH/NH3
------->
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