Question

Why there is colour change when copper sulphate is heated​

Answer 1

Answer:

The water in the copper sulfate solution evaporates and the crystals of copper sulfate turns from blue to white, meaning that it turns into anhydrous copper sulfate. On re hydrating, you get back the blue color.

Answer 2

Hey mate!!

here's your answer..

»The reason for colour change : -

›Before heating, the copper sulphate was blue in colour. After heating, the copper sulphate was white in colour. During heating it was observed that it changed from blue to white and a vapour was given off. The copper sulphate was left to cool and a few drops of water were then added.

»Process :-

when you heat copper sulphate it looses the water of crystallization hence turns white. When hydrate is heated, water molecules face a choice.When all the water is evaporated from hydrate, copper ions are left with only sulfate ions intheir surroundings. As a result, substance changes its color from blue to white.

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