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Question
Discuss the dehydrating property of conc. sulphuric acid on sulphate salts.
Short Answer
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Solution
Concentrated sulphuric acid removes the water of crystallisation from hydrated sulphate salts.
\[\ce{CuSO4 . 5H2O ->[Conc. H2SO4] CuSO4 (White) + 5H2O}\]
The blue copper sulphate crystals lose their water and turn into a white anhydrous powder.
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