Science, asked by sk9jlLapNe2esweta, 1 year ago

Copper sulphate crystal leaves white residue on heating why?

Answers

Answered by santy2
10
Blue copper(II) sulphate crystals are hydrated- referred to as copper(II) sulphate pentahydrate. Pentahydrate copper(II) sulphate is blue in color.

On the other hand, anhydrous copper (II) sulphate (no water of crystallization) is white.
Therefore when you heat the pentahydrate copper (II) sulphate, it loses its water of crystallization and a white anhydrous copper (II) sulphate is formed.

The reaction is as follows:
                                                              heat
                        CuSO4.5H2O      ------------------->   CuSO4 + 5H2O 
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