Question

Explain what happen when anhydrous calcium chloride or anhydrous copper (2) sulphate are exposed to the atmosphere for about two days.

Answer 1

Explanation:

Calcium chloride is a deliquescent substance. If anhydrous calcium chloride is exposed to air, it will absorb sufficient water from the air to allow it to dissolve. So, anhydrous calcium chloride is a deliquescent that is why it turns colourless when exposed to air.