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Intense Red Colour
faded green in colour
green solution
What is the metal cation that gives the 'green' colour.
zinc granules will have their colour changed to brownish black in colour.
The colour depends on the degree of hydration, but it is most often green.
Solid ferric hydroxide, Fe(OH)3, precipitates out of solution. The resulting sodium sulphate remains dissolved.
No colour
The solution is colorless.
Intense Red Colour
Copper sulphate's colour is blue.
When a iron nail is dipped into copper sulphate solution after sometime the colour is changed into pale green.
sulphate
faded green in colour
green solution
Why does the colour of copper sulphate solution change when an iron nail is dipped in it? When an iron nail is placed in a copper sulphate solution, iron displaces copper from copper sulphate solution forming iron sulphate, which is green in colour. Therefore, the blue colour of copper sulphate solution fades and green colour appears.
What is the metal cation that gives the 'green' colour.