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Which diagram below best represents the heating curve for ethanol? Physical Data for Ethanol 150 = -114.14 °C = 78.24 °C AHfus = 4.9 kJ/mol AHvap = 38.56 kJ/mol Tmp Tbp Cliquid ethanol Csolid ethanol Cgaseous ethanol 111.5 J/mol C = 112.4 J/mol C 78.28 J/mol C =

Which diagram below best represents the heating curve for ethanol? Physical Data for Ethanol 150 = -114.14 °C = 78.24 °C AHfus = 4.9 kJ/mol AHvap = 38.56 kJ/mol Tmp Tbp Cliquid ethanol Csolid ethanol Cgaseous ethanol 111.5 J/mol C = 112.4 J/mol C 78.28 J/mol C =

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
Chapter12: Thermodynamic Processes And Thermochemistry
Section: Chapter Questions
Problem 15P
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C) Less than 100 °C because as the water gets hotter, it takes a greater amount of heat to raise the temperature by one degree. D) 100 °C because that's the highest temperature liquid water can reach at 1 atm pressure. E) The water will all boil away before that much heat can be added.
Transcribed Image Text:C) Less than 100 °C because as the water gets hotter, it takes a greater amount of heat to raise the temperature by one degree. D) 100 °C because that's the highest temperature liquid water can reach at 1 atm pressure. E) The water will all boil away before that much heat can be added.
7. Which diagram below best represents the heating curve for ethanol? Physical Data for Ethanol A) C) E) B) Temperature (°C) Temperature (°C) 150 100 Temperature (°C) 50 0 150 100 0 50 0 -50 -100 -150 -50 -100 -150 150 100 50 0 -50 -100 -150 Tmp = -114.14 °C = 78.24 °C Tbp AHfus = 4.9 kJ/mol AHvap = 38.56 kJ/mol Heat added- -Heat added- -Heat added- Cliquid ethanol Csolid ethanol Cgaseous ethanol on D) Temperature (°C) = 111.5 J/mol C = 112.4 J/mol C = 78.28 J/mol C 150 100 50 Temperature (°C) 0 -50 -100 -150 150 100 50 0 -50 -100 -150 -Heat added-> -Heat added-> 8. 1026 kJ of heat is added to a sample of water at 1 atm pressure and the temperature rises from 40 °C to 80 °C. If 1026 kJ more heat is added, what will the final temperature of the water be? A) 120 °C because the water will continue to heat up at the same rate. B) More than 100 °C but less than 120 °C because some of the heat will be used to boil the water.
Transcribed Image Text:7. Which diagram below best represents the heating curve for ethanol? Physical Data for Ethanol A) C) E) B) Temperature (°C) Temperature (°C) 150 100 Temperature (°C) 50 0 150 100 0 50 0 -50 -100 -150 -50 -100 -150 150 100 50 0 -50 -100 -150 Tmp = -114.14 °C = 78.24 °C Tbp AHfus = 4.9 kJ/mol AHvap = 38.56 kJ/mol Heat added- -Heat added- -Heat added- Cliquid ethanol Csolid ethanol Cgaseous ethanol on D) Temperature (°C) = 111.5 J/mol C = 112.4 J/mol C = 78.28 J/mol C 150 100 50 Temperature (°C) 0 -50 -100 -150 150 100 50 0 -50 -100 -150 -Heat added-> -Heat added-> 8. 1026 kJ of heat is added to a sample of water at 1 atm pressure and the temperature rises from 40 °C to 80 °C. If 1026 kJ more heat is added, what will the final temperature of the water be? A) 120 °C because the water will continue to heat up at the same rate. B) More than 100 °C but less than 120 °C because some of the heat will be used to boil the water.
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