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Question
Answer the question below:
Why hydrated copper sulphate turns white on heating.
Solution
Because copper sulphate crystals emit water of crystallisation when heated.
\[\ce{\underset{(blue)}{CuSO4.5H2O}<=>[heat][cool]\underset{(white)}{CuSO4} + 5H2O}\]
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\[\ce{NaHSO4 <=> H+ + Na+ + SO^2-_4}\]
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