CaO can be used as a drying agent. One such application occurs when water is added to dry concrete or cement. The reaction that occurs is
Substance
CaO(s) + H2O(l) = Ca(OH)2(s)
The product is commonly called slaked lime.
Assuming standard temperature, calculate for this reaction using table from the table below.
S Delta H
CaO 39.9 635.1
H2O 69.9 285.8
Ca(OH) 83.4 986.1