Question

A sample of blue crystalline salt X is heated in a clean dry hard glass test tube . The salt on heating turns into white anhydrous form and colourless droplets of liquid Y are seen on the upper cooler part of the test tube . Y when brought in contact with anhydrous X regains its colour. Identify X and Y.

Answer 1

Answer:

X—Copper sulfate CuSO4

Y—H2O water

Explanation:

Copper sulfate pentahydrate looses it water on heating and thus loosing it's colour and regains it when we add water