Color Review

Cu2+

blue
MnO4
purple
Ni2+
green
Fe2+
yellow or green
Fe3+
red or orange
FeSCN2+
blood red
Cr2O72-
orange
CrO42-
yellow
Cu(NH3)42+
bright blue
Co(H20)62+
pink
CoCl42-
blue
BaCO3

white

(precipitate)

CaCo3

white

(precipitate)

PbCl2

white

(precipitate)

AgCl

white

(precipitate)

TiO2

white

(precipitate)

S

yellow

(precipitate)

PbI2

yellow

(precipitate)

AgI

pale yellow

(precipitate)

AgCrO4

red

(precipitate)

Cu(OH)2

light blue

(precipitate)

CuO

black

(precipitate)

KCl

white

(precipitate)

NO2

(gas)

brown

Cl2

(gas)

yellow

Iodine

(dissolved)

hot pink or purple

Bromine

(dissolved)

orange

Chlorine

(dissolved)

yellow-green

Starch + Iodide

(indicator)

colorless

phenolphthalein in base

(indicator)

pink

bromothymol blue in base

(indicator)

blue

Starch + Iodine

(indicator)

blue-black

phenolphthalein in acid

(indicator)

colorless

bromothymol blue in acid

(indicator)

yellow

Na+

(flame test)

yellow

K+

(flame test)

purple / pink

Ba2+

(flame test)

green

Li+, Ca2+, Sr2+

(flame test)

red

Cu2+

(flame test)

blue-green
x

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