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This requires a knowledge of crystal field theory. The d electrons that surround copper can be excited by light. This absorption of red/yellow causes the colour to appear blue.

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What color is copper sulphate?

Blue...but you could just google this in google images...??


What is the color of iron sulphate?

Blue-Green.


What colour does hydrous copper sulphate turn when heated?

Hydrous copper sulphate, when heated, turns into anhydrous copper sulphate and changes its color from blue to white. The blue color comes from the water molecules bound to the copper sulphate crystals, and when heated, these water molecules are removed, resulting in a color change.


What color is copper sulphate solution and water mixture?

Copper sulphate's colour is blue.


What substance changes blue anhydrous copper sulphate crystals to white?

Water changes blue anhydrous copper sulphate crystals to white by creating hydrated copper sulphate, which is white in color.


What is color of Ferrous Sulphate?

Ferrous Sulphate, also known as Iron (II) sulphate or green vitrol is green.


What is the colour of copper sulphate at room temperature?

the copper sulphate i used at room temperature was blue.


What color is sulphate when dissolved in water?

Sulfate/Sulphate dissolved in water is blue in color. That's COPPER sulphate; there are many other sulphates which have many different colours, or are colourless.


When blue copper sulphate is heated it become white why?

When blue copper sulphate is heated, it loses water molecules and converts to anhydrous copper sulfate, which is white in color. The blue color of copper sulfate is due to the presence of water molecules in its crystal structure.


Copper sulphate add to sodium hydroxide result colour?

When copper sulfate is added to sodium hydroxide, a blue precipitate of copper hydroxide is formed. The color change observed is from the initial blue color of copper sulfate to the blue precipitate of copper hydroxide.


What are the properties of blue vitriol altered during water of crsytallization?

Blue vitriol is a very obsolete name for the copper(II)sulphate: CuSO4. Don't use in the future this term. Pentahydratated copper(II) sulphate: CuSO4.5H2O - bright blue color After the dehydratation of the above compound we obtain the anhydrous copper(II) sulphate: CuSO4 - pale green color.


How do you distinguish between copper sulphate solution sodium chloride solution sodium nitrate solution or sodium sulphate solution?

copper sulphate solution-blue sodium chloride (salt) solution-clear sodium nitrate solution- white to clear sodium sulphate solution- white copper sulphate solution-blue sodium chloride (salt) solution-clear sodium nitrate solution- white to clear sodium sulphate solution- white