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Chem 115 - General Chemistry I

Stoichiometry IX - Video Solution

Drierite is the brand name of a variety of desiccants made from anhydrous calcium sulfate. Each empirical unit of calcium sulfate can absorb two molecules of water. Drierite contains a trace of a color indicator that shows when it cannot absorb any more water. However, one can regenerate anhydrous calcium by heating it in a drying oven and driving off the water. What mass of water is released when 2.00 grams of CaSO4×2H2O are heated in a drying oven.

CaSO4×2H2O(s)      CaSO4(s)      +     2 H2O(g)

 

 

 

 

 



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