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Blue, because the copper cations become hydrated and the hydrated ions have a blue color.

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Why does the color of copper sulphate change when an iron nail 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.


Why does white copper sulphate turn blue when water is added?

White copper sulfate is anhydrous, meaning it does not contain water molecules. When water is added to white copper sulfate, it forms a hydrate compound called blue copper sulfate pentahydrate. The water molecules coordinate with the copper ions, causing the compound to change color from white to blue.


What happens when water is added to white copper sulfate?

When water is added to white copper sulfate (CuSO4), it dissolves and forms a blue-colored solution. This reaction is reversible, as the blue color disappears when the water evaporates and the white copper sulfate crystals are left behind.


What happens when water is added to anhydrous copper II sulphate?

When water is added to anhydrous copper (II) sulfate, it will undergo an exothermic reaction where the compound absorbs water molecules to form hydrated copper (II) sulfate. The anhydrous copper (II) sulfate changes color from white to blue as it forms the hydrate.


What is The name of the copper sulphate after being heated?

Copper Sulphate usually is found in a hydrated form (i.e., water molecules are incorporated into the crystals.) Pure copper sulphate is a pale, greenish gray color. The familiar blue color only occurs in hydrates of copper sulphate (i.e., in crystals that incorporate H20 molecules). Heating the blue crystals can drive off the water. It's still called copper sulphate after you do that. For substances like copper sulphate that naturally attract water, the adjective, anhydrous often is used to describe the pure (water free) state. If you heat copper sulphate to a temperature of 650C, it will decompose into something else. http://en.wikipedia.org/wiki/Copper_sulphate

Related Questions

When added to copper sulphate what colour is anhydrous copper sulphate?

anhydrous copper sulphate is white. when water is added it turns blue, in essence it can be used to detect the presence of water. hope this helps!!!!!!!!!!!


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.


Why does copper sulphate turn blue when water is added?

The copper sulfate reacts with the water, creating a new substance with a different color.


What color is copper sulphate solution and water mixture?

Copper sulphate's colour is blue.


What color is copper sulphate?

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


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 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 the colour of copper sulphate at room temperature?

the copper sulphate i used at room temperature was blue.


What color is pasta when copper sulphate and sodium chloride is mixed with it?

The copper sulphate will likely give the pasta a blue or green hue, while the sodium chloride (salt) will not significantly alter its color. The overall color may appear bluish-green due to the copper sulphate.


What two colour changes do you get when you add copper sulphate solution to iron wool?

When you add copper sulphate solution to iron wool. The iron wool turns copper in color and the copper sulphate solution turns pale blue as the iron displaces the copper from the copper sulphate solution forming iron sulfate.


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.


What happens to copper sulphate when heated?

When copper sulfate is heated, it undergoes thermal decomposition, turning into copper oxide, sulfur dioxide gas, and oxygen gas. The color of the compound changes from blue to black as the heating process progresses.