Question

What makes Copper sulphate solution colour blue?​

Answer 1

Explanation:

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:- It is due to the presence of "Cu²+" ions which make it appear blue in colour.

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Answer 2

Answer:

Copper sulphate, the blue colour is due to the light energy being used to promote or excite electrons that are in the atom of the copper when it's combined with other things such as the sulphate or carbonate ions and so on.

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Explanation: