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17 terms

Aqueous Ion Colors (with photos)

These are all stock quizlet photos, but they do their mnemonic job well enough I think :) (I was forced to use stock photos for the colors, and some of the photos are of beverages; I feel obliged to say that NEVERTHELESS, UNDER NO CIRCUMSTANCES SHOULD YOU INGEST ANY OF THESE SOLUTIONS)
STUDY
PLAY
Cu1+
Green
Cu2+
Blue
Fe
Yellow to red-orange (depending on anion and charge of Fe); in rare cases, can form complex ion with a deep blue color
Fe2+
yellow-green (depending on the anion)
Fe3+
orange-red (depending on the anion)
Co1+
Green
Co2+
Pink
Cr2+
Blue
Cr3+
Green (CrCl3) to Violet (Cr(NO3)3
Ni2+
Green
MnO4-
Purple (Mn w/ +7 oxidation state is purple)
CrO42-
Yellow
Cr2O72-
Orange
Cu(NH3)42+
Dark Blue; produced when ammonia is added to Cu2+ solutions
FeSCN2+
Red-brown, Wine-red to dark orange
Al, K, Li, Mg, Na, Ca, Ba, Sr, Zn
colorless aqueous ions and most of their solid salts are white.
Transition element ions with partially filled d orbitals
tend to release colored light.

Flickr Creative Commons Images

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