Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Transcribed Image Text:Calculations
1.
From the titration data, calculate the concentration of hydroxide in the saturated solution.
Knowing that when Ca(OH)2 dissolves, the resulting concentration of calcium ions is one half
the concentration of hydroxide, calculate the concentration of calcium ions. Use these values to
calculate the Ksp of Ca(OH)2. Do this calculation for each of the temperatures tested.
2.
From the equilibrium constant values, calculate the standard free energy change values.
3.
From a plot of InKsp Vs 1/T, calculate the value of the standard enthalpy change and the
standard entropy change for the dissolving of Ca(OH)2.
4.
In your discussion, comment on the physical meaning of the results that you have calculated.
Transcribed Image Text:2.
Explain how the following equation will be made use of in the calculations for this
experiment.
AG° = –RTlnK = AH° – TAS°
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