When copper sulphate crystals are heated in a test tube, the colour o
crystals changed from blue to white. But when white substance is coo
the colour changes to blue again. What type of changes take place
heating and cooling the crystals respectively
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This shows the dehydrating of copper sulphate solution which changes its colour on being heated.
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the hydrated copper sulphate loses its water of crystallisation to become white amorphous powder. this change or phenomenon is known as efflorwefflore. the white amorphous powder absorbs moisture from atmosphere to become cuso4.5h2o . this change is known as deliquescence
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