Acidified potassium permanganate
MnO4- →
Color?
Mn²+
Purple → Colorless
Acidified potassium dichromate
Cr2O7²- →
Color?
Cr³+
Orange → Green
Dilute nitric
NO3- →
Color?
NO
Colorless → Colorless
Conc nitric
NO3- →
Color?
NO2
Colorless → Brown
Conc sulphuric
H2SO4 →
Color?
SO2
Colorless → Colorless
Oxygen
O2 →
O2 →
Color?
OH-
O²-
All colorless
Chlorine
Cl2 →
Color?
Cl-
Yellowish green → Colorless
Bromine
Br2 →
Color?
Br-
Brown → Colorless
Iron(III)
Fe³+ →
Color?
Fe²+
Yellow → Pale green
Metal ion →
Metal atom