Oxidised state

MnO4-

Purple (aq)

Permanganate

Oxidised state

Cr2O72-

Orange (aq)

Dichromate

Reduced state

Cr3+Green (aq)

Chromium ion

Oxidised state

MnO4-

Purple (aq)

Permanganate

Oxidised state

Fe3+Orange (aq)

Iron (lll) ion

Oxidised state

Cu2+Blue (aq)

Copper (ll) ion

Reduced state

Fe2+Green (aq)

Iron (ll) ion

Reduced state

NO2Brown (g)

Nitrogen dioxide

Oxidised state

I2Blue-Black (s)

Iodine

Oxidised state

MnO4-

Purple (aq)

Permanganate

Reduced state(Alkaline conditions)

MnO42-

Green (aq)Manganate

Reduced state(Neutral conditions)

MnO2Brown (s)

Manganese dioxide

Oxidised state

Cl2Pale green (g)

Chlorine

Oxidised state

Syellow (s)

Sulfur

Oxidised state

Br2Brown (s)

Bromine

Reduced state

CuRed/brown (s)

Copper

Oxidised state

ClO3-

colourless (aq)

Chlorate

Oxidised state

O2colourless (g)

Oxygen

Reduced state

Cl-Colourless (aq)

Chloride ion

Reduced state

O2-colourless (aq)

Oxide ion

Oxidised state

H+colourless (aq)

Hydrogen ion

Reduced state

H2Colourless (g)

Hydrogen gas

Reduced state

Br-colourless (aq)

Bromide

Reduced state

H2Scolourless (g)

Hydrogen sulfide

Oxidised state

COcolourless (g)

Carbon monoxide

Oxidised state

O2colourless (g)

oxygen

Reduced state

CBlack (s)

Carbon

Reduced state

H2O2colourless (l)

Hydrogen peroxide

Reduced state

CBlack (s)

Carbon

Oxidised state

SO42-

colourless (aq)

Sulfate ion

Oxidised state

H2O2colourless (l)

Hydrogen peroxide

Reduced state

SO2colourless (g)

Sulfur dioxide

Reduced state

H2Ocolourless (l)

Water

Oxidised state

CO2colourless (g)

Carbon dioxide

Oxidised state

O2colourless (g)

oxygen

Reduced state

H2C2O4colourless (l)

Oxalic acid

Reduced state

H2O2colourless (l)

Hydrogen peroxide

Reduced state

Mn2+Colourless (aq)

Manganese ion

Reduced state

Cu+White (aq)

Copper (l) ion

Reduced state

I-colourless (aq)

Iodide

Oxidised state

NO3-

colourless (aq)

Nitrate ion

Oxidised state

BrO3-

colourless (aq)

Bromate

Reduced state

Zn2+colourless (aq)

Zinc ion

Reduced state

Cu+White (aq)

Copper (l) ion

Reduced state

Znsilver (s)

Zinc

Oxidised state

Zn2+colourless (aq)

Zinc ion

Reduced state

Br-colourless (aq)

Bromide

Oxidised state

Cu+White (aq)

Copper (l) ion

Reduced state

Cl-Colourless (aq)

Chloride ion