a) Acetone, C3H₂O, has a normal boiling point of 56.2 °C and the molar enthalpy of vaporization (AHm.vap) of 30.3 kJ/mol. Calculate AS vap (in J/K) for the vaporization of 0.758 mol of acetone. b) Find the molar entropy of vaporization (in J/(K-mol)) for a certain substance given that to vaporize 0.231 mol of that substance at -46.4 °C AH = 4.27 kJ.
a) Acetone, C3H₂O, has a normal boiling point of 56.2 °C and the molar enthalpy of vaporization (AHm.vap) of 30.3 kJ/mol. Calculate AS vap (in J/K) for the vaporization of 0.758 mol of acetone. b) Find the molar entropy of vaporization (in J/(K-mol)) for a certain substance given that to vaporize 0.231 mol of that substance at -46.4 °C AH = 4.27 kJ.
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:a)
Acetone, C3H6O, has a normal boiling point of 56.2 °C and the molar enthalpy of vaporization
(AHm,vap) of 30.3 kJ/mol. Calculate ASvap (in J/K) for the vaporization of 0.758 mol of acetone.
b)
Find the molar entropy of vaporization (in J/(K-mol)) for a certain substance given that to vaporize
0.231 mol of that substance at -46.4 °C AH = 4.27 kJ.
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Step 1: Determine the given values
VIEWStep 2: Calculation of temperature in kelvin.
VIEWStep 3: Calculation of dSvap.
VIEWStep 4: Determine the given values.
VIEWStep 5: Calculation of molar enthalpy of vaporization.
VIEWStep 6: Calculation of temperature in Kelvin.
VIEWStep 7: Calculation of dSm,vap.
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