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Blue copper(II) sulfate (CuSO4), when heated, loses 5 water molecules per formula unit of water of crystallization. Its lattice structure collapses, giving it different physical properties, i.e. color.

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When blue salt of copper sulphate is heated it becomes colourless why?

actually blue salt of copper sulphate is chemically copper sulphate penta hydrate( CuSO4.5H2O ). blue coloure is due to thiese 5 moles of water . by heating this water evaporates and leaving CuSO4 which is colourless


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 happens if Copper Sulphate penta-hydrate is heated?

When copper sulfate pentahydrate is heated, it undergoes a dehydration reaction where the water molecules are released, leaving behind anhydrous copper sulfate. This process is reversible, and when anhydrous copper sulfate is exposed to moisture, it will reabsorb water and form copper sulfate pentahydrate again.


When Copper sulphate crystal is heated?

they dissolve or dilute


Why blue crystals of copper sulphate on heating turn colourless?

The formula of the blue crystals of copper sulphate is CuSO4.5H2O. When they are heated mildly, the water from the crystals evaporate, giving just CuSO4. This 'anhydrous' form of copper (II) sulphate is white in colour.


What happensd when copper sulphate are heated?

The reaction is;CuSO4 = CuO + SO3


What are some reversible chemical reactions?

Examples of reversible chemical reactions - hydrous copper sulphate (blue) heated becomes anhydrous copper sulphate (white). When water is added, the reaction is reversed. Nitrogen dioxide (reddish brown gas) reacts to form colourless dinitrogen tetroxide, this reaction can go the other way also. Hydrogen and oxygen react to form water. This molecule can be split back into hydrogen and oxygen through electrolysis.


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 colour is anhydrous copper sulphate once heated?

Hydrated copper sulphate (CuSO4.5H2O) is BLUE Anhydrous copper sulphate (CuSO4) is white at any temperature.


What happens when copper is added to concentrated sulfuric acid and heated gently?

copper sulphate and hydrogen is released.


What colour is the flame of copper sulphate when heated?

it is like the color but gold more


When blue colour copper sulphate crystal are heated?

When blue copper sulfate crystals are heated, the water of crystallization evaporates, turning the blue crystals white. This is due to the loss of water molecules, resulting in anhydrous copper sulfate.