a few copper sulphate crystals were heated in a test tube (1) What was the colour of copper sulphate crystals (a) before heating (b) after heating
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Before heating the copper sulphate crystals are blue in colour and after heating the colour changes to white and on the test tube walls water droplets are formed as water of crystallization is evaporated on heating.
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Answer:
(a) White
(b) Yes
(c) Copper sulphate crystals which seem to be dry contain water of
crystallization.
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