Crystals of a substance changed their colour on heating in a closed test-tube but regained it after sometime when they were allowed
Crystals of a substance changed their colour on heating in a closed test-tube but regained it after sometime when they were allowed to cool down. Name the substance and write its formula and explain the phenomenon involved.
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Copper sulphate crystals (CuSO4.5H2O)
5 molecules of water are present in one formula unit of copper sulphate. When heated, its loses its water and salt turns white.
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