Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter18: Principles Of Chemical Reactivity: Entropy And Free Energy
Section: Chapter Questions
Problem 3PS: Use S values to calculate the standard entropy change, rS0, for each of the following processes and...
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Question
Transcribed Image Text:Given the thermodynamic properties below, determine the standard entropy change,
AS', for the dissolution of calcium hydroxide. Give your answer to one decimal place
in J/mol.
Ca(OH)2 (s) =
Ca2+ (aqg) + 2 OH (aq)
S° (J/mol-K)H (kJ/mol) G (kJ/mol)
Ca(OH)2 (s)83.4
-986.1
-898.6
Ca2+ (ag) -53.1
-542.8
-553.6
OH (aq)
-10.8
-230.0
-157.2
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