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1.The AS of a substance at constant pressure without phase changes is given by the following equation: T final AS=nCpln- initial Calculate the total change in entropy of 1.00 mole of aluminum as it is heated from 600 °C to 700 °C. Note that this temperature change includes the metal's melting point at 660 °C. The heat of fusion (AHfus) is 393 J/g, and the heat capacities of the solid and liquid phases are Cp,m(s)= 31.8 J/K- mol and Cp,m = 34.4 J/K-mol, respectively T

1.The AS of a substance at constant pressure without phase changes is given by the following equation: T final AS=nCpln- initial Calculate the total change in entropy of 1.00 mole of aluminum as it is heated from 600 °C to 700 °C. Note that this temperature change includes the metal's melting point at 660 °C. The heat of fusion (AHfus) is 393 J/g, and the heat capacities of the solid and liquid phases are Cp,m(s)= 31.8 J/K- mol and Cp,m = 34.4 J/K-mol, respectively T

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter13: Spontaneous Processes And Thermodynamic Equilibrium
Section: Chapter Questions
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1.The AS of a substance at constant pressure without phase changes is given by the following equation: T final AS=nCpln- initial Calculate the total change in entropy of 1.00 mole of aluminum as it is heated from 600 °C to 700 °C. Note that this temperature change includes the metal's melting point at 660 °C. The heat of fusion (AHfus) is 393 J/g, and the heat capacities of the solid and liquid phases are Cp.m(s)= 31.8 J/K- mol and Cp,m (= 34.4 J/K-mol, respectively T 2. Consider 0.5 moles of a perfect gas initially at 25 °C and 1.00 atm. Cvm for this gas is 1.5R. For each of the following reversible processes, find q, w, and AU. a. Isothermal compression to 5.00 atm. b. Heating to 35 °C at onstant volume. c. Heating to 35 °C at constant pressure. d. Adiabatic expansion to 0.25 atm.
Transcribed Image Text:1.The AS of a substance at constant pressure without phase changes is given by the following equation: T final AS=nCpln- initial Calculate the total change in entropy of 1.00 mole of aluminum as it is heated from 600 °C to 700 °C. Note that this temperature change includes the metal's melting point at 660 °C. The heat of fusion (AHfus) is 393 J/g, and the heat capacities of the solid and liquid phases are Cp.m(s)= 31.8 J/K- mol and Cp,m (= 34.4 J/K-mol, respectively T 2. Consider 0.5 moles of a perfect gas initially at 25 °C and 1.00 atm. Cvm for this gas is 1.5R. For each of the following reversible processes, find q, w, and AU. a. Isothermal compression to 5.00 atm. b. Heating to 35 °C at onstant volume. c. Heating to 35 °C at constant pressure. d. Adiabatic expansion to 0.25 atm.
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