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PART 2 Q1(10 pts.) CaO can be used as a drying agent. One such application occurs when water is added to dry concrete or ceme

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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

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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 reaction that occurs is CaO(s)+H2O(l)⇌Ca(OH)2(s) The product is commonly called slaked lime. Assuming the commonly used standard-state temperature of 25∘C, calculate ΔSuniv 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

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