Question

5. 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 a liquid D are
added to powder C, it becomes blue again. What could be A, B, C and D?​

Answer 1

Answer:

A= bluevitiral coppersulphate solution,

B=watervapour,

C=anhydrous copper sulphate solution,

D=water in liquid.

Answer 2

Answer:

copper sulphate pentahydrate is A,B=7H2O,C=anhydrous copper sulphate,D= water.

Explanation:

CuSO4.5H2O gives CuSO4+5 H2O