The metal salt A is blue in colour. When salt A is heated strongly ove

1.	The metal salt A is blue in colour. When salt A is heated strongly over a burner, then a substance B is eliminated and a white powder C is left behind. When a few drops of a liquid D are added to powder C, it becomes blue again. What could be A, B, C and D ?
Answer» A is copper sulphate pentahydrate, CuSO₄ .5H₂O B is water, H₂O C is anhydrous copper sulphate, CuSO₄ D is water, H₂O

The metal salt A is blue in colour. When salt A is heated strongly over a burner, then a substance B is eliminated and a white powder C is left behind. When a few drops of a liquid D are added to powder C, it becomes blue again. What could be A, B, C and D ?

Answer»

A is copper sulphate pentahydrate, CuSO₄ .5H₂O

B is water, H₂O

C is anhydrous copper sulphate, CuSO₄

D is water, H₂O