View Single Post
  #3   Report Post  
Posted to uk.d-i-y
D.M. Procida D.M. Procida is offline
external usenet poster
 
Posts: 530
Default Moisture absorbing calcium chloride crystals

Julian wrote:

Why am I left with a solid and a liquid, not just some dissolved calcium
chloride?


If you leave it long enough you will get just liquid, the situation that you
describe is because the liquid is saturated.


So, the crystals started absorbing moisuture, to the point of being
dissolved in the moisture they were absorbing.

As this happens, the stuff heats up (apparently this reaction produces a
lot of heat) and the water becomes super-saturated, and continues to
dissolve more of the crystals.

Then it starts cooling down, and as it cools down some of the calcium
chloride precipitates out of the water.

Is that correct?

Daniele