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You have this backwards. Copper sulfate, CuSO4.5H2O is blue. When it is gently heated, it loses water and turns white.CuSO4.5H2O --> CuSO4 + 5 H2O.The white substance is anhydrous copper sulfate. If you put water on it it turns blue again.

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7y ago
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5mo ago

Heating copper sulfate causes it to lose water molecules from its structure, forming anhydrous copper sulfate, which is white. However, the anhydrous copper sulfate rapidly absorbs water vapor from the air to reform copper sulfate pentahydrate, which is blue.

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Q: Why when you heat up copper sulphate does it turn blue?
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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 type of change happens when you heat copper sulfate?

When you heat copper sulfate, it undergoes a physical change where it loses its water of hydration, turning from blue crystals to a white powder (anhydrous copper sulfate). This change is reversible, as adding water to the white powder will turn it back to blue crystals.


Why does the copper sulphate powder turn blue and gets hot when add water to it?

When water is added to copper sulfate powder, it dissolves to form a solution. This dissolution is an exothermic process, meaning it releases heat, causing the solution to become warm. The blue color of the solution is due to the copper ions in the copper sulfate forming a blue complex with water molecules.


What happens when you heat copper sulfate crystals?

When heated, copper sulfate crystals lose their water molecules and turn into anhydrous copper sulfate, releasing steam in the process. The color of the crystals changes from blue to white as they lose the water.


When copper sulphate reacts with iron what colour does it turn?

When copper sulphate reacts with iron, the solution turns blue due to the formation of copper ions in the solution. This is because copper is displaced from the copper sulfate and iron sulfate is formed, leading to the blue color of the solution.

Related questions

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 type of change happens when you heat copper sulfate?

When you heat copper sulfate, it undergoes a physical change where it loses its water of hydration, turning from blue crystals to a white powder (anhydrous copper sulfate). This change is reversible, as adding water to the white powder will turn it back to blue crystals.


Why does the copper sulphate powder turn blue and gets hot when add water to it?

When water is added to copper sulfate powder, it dissolves to form a solution. This dissolution is an exothermic process, meaning it releases heat, causing the solution to become warm. The blue color of the solution is due to the copper ions in the copper sulfate forming a blue complex with water molecules.


What happens when you heat copper sulfate crystals?

When heated, copper sulfate crystals lose their water molecules and turn into anhydrous copper sulfate, releasing steam in the process. The color of the crystals changes from blue to white as they lose the water.


When copper sulphate reacts with iron what colour does it turn?

When copper sulphate reacts with iron, the solution turns blue due to the formation of copper ions in the solution. This is because copper is displaced from the copper sulfate and iron sulfate is formed, leading to the blue color of the solution.


When mixed with water why does copper sulphate turn water blue?

because when in a solution it forms blue crystals creating a blue colour


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 colour does copper sulphate turn the universal indicator?

Copper sulfate will turn universal indicator blue or purple due to its acidic nature.


What color does anyhydrous copper sulphate turn when added to water?

Anhydrous copper sulfate is white in its solid form. When added to water, it will dissolve and the solution will turn blue due to the formation of hydrated copper sulfate.


Why blue crystals of copper sulphate on heating turn colourless?

When blue crystals of copper sulfate (CuSO4) are heated, they lose their water of hydration molecules, which causes the crystals to turn colorless. The blue color of copper sulfate is due to the presence of water molecules within its structure, so once these water molecules are removed, the crystal appears colorless.


What is the colour of copper sulphate crystals before and after heating?

Copper Sulphate crystals before heating r blue....but after heating I dunno , may be u should try and ask your Sci.Miss/Sir I'll get back when I get the other answer .


What is the pool water dark after using copper sulphate?

the chlorine in the water oxidizes the copper causing an off color, if you used enough of each it would turn a greenish blue color.