CaO can be used as a drying agent. One such application occurs when water is added to dry concrete or cement. The react...

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CaO can be used as a drying agent. One such application occurs when water is added to dry concrete or cement. The react...

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

CaO(s)+H2O(l)⇌Ca(OH)2(s)

The product is commonly called slaked lime.

Assuming ambient standard temperature of 298.15 K, calculate ΔStotal for this reaction using table from the table below.

Substance	S∘ [J/(K⋅mol)]	ΔH∘f (kJ/mol)
CaO(s)	39.9	−635.1
H2O(l)	69.9	−285.8
Ca(OH)2(s)	83.4	−986.1

science chemistry

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Answer 1

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Answer #1

Cao(s)+H,0()Ca(OH)2(s) AH-E( products)-E( reactants) - (1 molx-986.1 kJ/mol) (1molx- 635.1 kJ/mol +1 molx - 285.8 kJ/mol) -65

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CaO can be used as a drying agent. One such application occurs when water is added to dry concrete or cement. The react...

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CaO can be used as a drying agent. One such application occurs when water is added to dry concrete or cement. The react...

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