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12. EXPERIMENT with rubber bands: a) Touch a rubber band to your lips. Remove, then stretch it quickly and touch it to your lips again. How has the temperature changed? What is the sign of AH? (Remember that the rubber band is the system and that YOU are the surroundings.) b) Allow the band to collapse (return) and touch it to your lips again. How has the temperature changed? What is the sign of AH°? c) Determine the sign of ASº for this return process. (from AG=AH° - TAS°) d) Rationalize the sign of AS° with the structure relaxed versus stretched. Which is the more ordered state?

12. EXPERIMENT with rubber bands: a) Touch a rubber band to your lips. Remove, then stretch it quickly and touch it to your lips again. How has the temperature changed? What is the sign of AH? (Remember that the rubber band is the system and that YOU are the surroundings.) b) Allow the band to collapse (return) and touch it to your lips again. How has the temperature changed? What is the sign of AH°? c) Determine the sign of ASº for this return process. (from AG=AH° - TAS°) d) Rationalize the sign of AS° with the structure relaxed versus stretched. Which is the more ordered state?

Physical Chemistry
Physical Chemistry
2nd Edition
ISBN:9781133958437
Author:Ball, David W. (david Warren), BAER, Tomas
Publisher:Ball, David W. (david Warren), BAER, Tomas
Chapter2: The First Law Of Thermodynamics
Section: Chapter Questions
Problem 2.20E: The statement Energycan beneithercreatednor destroyedis sometimes used as an equivalent statement of...
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12. EXPERIMENT with rubber bands: a) Touch a rubber band to your lips. Remove, then stretch it quickly and touch it to your lips again. How has the temperature changed? What is the sign of AH? (Remember that the rubber band is the system and that YOU are the surroundings.) b) Allow the band to collapse (return) and touch it to your lips again. How has the temperature changed? What is the sign of AHº? c) Determine the sign of ASº for this return process. (from AG=AH - TAS") d) Rationalize the sign of ASº with the structure relaxed versus stretched. Which is the more ordered state?
Transcribed Image Text:12. EXPERIMENT with rubber bands: a) Touch a rubber band to your lips. Remove, then stretch it quickly and touch it to your lips again. How has the temperature changed? What is the sign of AH? (Remember that the rubber band is the system and that YOU are the surroundings.) b) Allow the band to collapse (return) and touch it to your lips again. How has the temperature changed? What is the sign of AHº? c) Determine the sign of ASº for this return process. (from AG=AH - TAS") d) Rationalize the sign of ASº with the structure relaxed versus stretched. Which is the more ordered state?
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