B Assignments - CHEM-3500-001 O Problem_Set 4_2020.pdf O Mail - Jarrett B Kilgore - Outlook X b My Questions | bartleby O File | C:/Users/jbkil/Downloads/Problem_Set%204_2020.pdf Problem_Set 4_2020.pdf 1/2 тODIешрeоч Second Law and Third Law: 1) Without performing a calculation, predict whether the standard entropies of the following reactions are positive or negative: trypsin (a) Ala-Ser-Thr-Lys-Gly-Arg-Ser +Gly-Arg Ala-Ser-Thr-Lys- trypsin (b) N;(g)+3 H;(g) (c) ATP+(aq)+H,0(1): H;O*(aq) 2 NH3(g) trypsin ADP³-(aq) +HPOF(aq) + 2) Justify the identification of the statistical entropy with the thermodynamic entropy. 3) Provide a molecular interpretation of the hydrophobic interaction. 4) What do you understand by residual entropy? Give an example 5) Suppose that when you exercise, you consume 100 g of glucose and that all the energy released as heat remains in your body at 37°C. What is the change in entropy of your body? 6) Suppose you put a cube of ice of mass 100 g into a glass of water at just above 0°C. When the ice melts, about 33 kJ of energy is absorbed from the surroundings as heat. What is the change in entropy of (a) the sample (the ice) and (b) the surroundings (the glass of water)? 7) Calculate the change in entropy of 100 g of ice at 0°C as it is melted, heated to 100°C, and then vaporized at that temperature. Suppose that the changes are brought about by a heater that supplies energy at a constant rate. Sketch a graph showing: (a) the change in temperature of the system, (b) the enthalpy of the system (c) the entropy of the system as a function of time. 8) Calculate the standard reaction entropy at 298 K of the fermentation of glucose to ethanol: C,H12O6(s) →2 C,H;OH(1) +2 CO2(g). 9) In a particular biological reaction taking place in the body at 37°C, the change in enthalpy was -125 kJ mol' and the change in entropy was –126 J K" mol'. (a) Calculate the change in Gibbs energy. (b) Is the reaction spontaneous? (c) Calculate the total change in entropy of the system and the surroundings. 10) The change in Gibbs energy that accompanies the oxidation of C,H12O6(s) to carbon dioxide and water vapor at 25°C is –2808 kJ mol'. How much glucose does a person of mass 65 kg need to noncuma to olimb throuch 10 m2 Problem_Set 4_2020.pdf Chapter_5_Chemi.pptx Chapter_4_Physic..pptx Chapter_3_Secon.pptx ZoomOutlookPlug.msi Show all 2:56 PM O Type here to search 3/31/2020 (3 ...
B Assignments - CHEM-3500-001 O Problem_Set 4_2020.pdf O Mail - Jarrett B Kilgore - Outlook X b My Questions | bartleby O File | C:/Users/jbkil/Downloads/Problem_Set%204_2020.pdf Problem_Set 4_2020.pdf 1/2 тODIешрeоч Second Law and Third Law: 1) Without performing a calculation, predict whether the standard entropies of the following reactions are positive or negative: trypsin (a) Ala-Ser-Thr-Lys-Gly-Arg-Ser +Gly-Arg Ala-Ser-Thr-Lys- trypsin (b) N;(g)+3 H;(g) (c) ATP+(aq)+H,0(1): H;O*(aq) 2 NH3(g) trypsin ADP³-(aq) +HPOF(aq) + 2) Justify the identification of the statistical entropy with the thermodynamic entropy. 3) Provide a molecular interpretation of the hydrophobic interaction. 4) What do you understand by residual entropy? Give an example 5) Suppose that when you exercise, you consume 100 g of glucose and that all the energy released as heat remains in your body at 37°C. What is the change in entropy of your body? 6) Suppose you put a cube of ice of mass 100 g into a glass of water at just above 0°C. When the ice melts, about 33 kJ of energy is absorbed from the surroundings as heat. What is the change in entropy of (a) the sample (the ice) and (b) the surroundings (the glass of water)? 7) Calculate the change in entropy of 100 g of ice at 0°C as it is melted, heated to 100°C, and then vaporized at that temperature. Suppose that the changes are brought about by a heater that supplies energy at a constant rate. Sketch a graph showing: (a) the change in temperature of the system, (b) the enthalpy of the system (c) the entropy of the system as a function of time. 8) Calculate the standard reaction entropy at 298 K of the fermentation of glucose to ethanol: C,H12O6(s) →2 C,H;OH(1) +2 CO2(g). 9) In a particular biological reaction taking place in the body at 37°C, the change in enthalpy was -125 kJ mol' and the change in entropy was –126 J K" mol'. (a) Calculate the change in Gibbs energy. (b) Is the reaction spontaneous? (c) Calculate the total change in entropy of the system and the surroundings. 10) The change in Gibbs energy that accompanies the oxidation of C,H12O6(s) to carbon dioxide and water vapor at 25°C is –2808 kJ mol'. How much glucose does a person of mass 65 kg need to noncuma to olimb throuch 10 m2 Problem_Set 4_2020.pdf Chapter_5_Chemi.pptx Chapter_4_Physic..pptx Chapter_3_Secon.pptx ZoomOutlookPlug.msi Show all 2:56 PM O Type here to search 3/31/2020 (3 ...
Chapter7: Statistical Data Treatment And Evaluation
Section: Chapter Questions
Problem 7.19QAP
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I need help with quesion 6. Thanks.
Transcribed Image Text:B Assignments - CHEM-3500-001
O Problem_Set 4_2020.pdf
O Mail - Jarrett B Kilgore - Outlook X
b My Questions | bartleby
O File | C:/Users/jbkil/Downloads/Problem_Set%204_2020.pdf
Problem_Set 4_2020.pdf
1/2
тODIешрeоч
Second Law and Third Law:
1) Without performing a calculation, predict whether the standard entropies of the following reactions
are positive or negative:
trypsin
(a) Ala-Ser-Thr-Lys-Gly-Arg-Ser
+Gly-Arg
Ala-Ser-Thr-Lys-
trypsin
(b) N;(g)+3 H;(g)
(c) ATP+(aq)+H,0(1):
H;O*(aq)
2 NH3(g)
trypsin
ADP³-(aq) +HPOF(aq) +
2) Justify the identification of the statistical entropy with the thermodynamic entropy.
3) Provide a molecular interpretation of the hydrophobic interaction.
4) What do you understand by residual entropy? Give an example
5) Suppose that when you exercise, you consume 100 g of glucose and that all the energy released as
heat remains in your body at 37°C. What is the change in entropy of your body?
6) Suppose you put a cube of ice of mass 100 g into a glass of water at just above 0°C. When the ice
melts, about 33 kJ of energy is absorbed from the surroundings as heat. What is the change in entropy
of
(a) the sample (the ice) and (b) the surroundings (the glass of water)?
7) Calculate the change in entropy of 100 g of ice at 0°C as it is melted, heated to 100°C, and then
vaporized at that temperature. Suppose that the changes are brought about by a heater that supplies
energy at a constant rate. Sketch a graph showing:
(a) the change in temperature of the system,
(b) the enthalpy of the system
(c) the entropy of the system as a function of time.
8) Calculate the standard reaction entropy at 298 K of the fermentation of glucose to ethanol:
C,H12O6(s) →2 C,H;OH(1) +2 CO2(g).
9) In a particular biological reaction taking place in the body at 37°C, the change in enthalpy was -125
kJ mol' and the change in entropy was –126 J K" mol'.
(a) Calculate the change in Gibbs energy.
(b) Is the reaction spontaneous?
(c) Calculate the total change in entropy of the system and the surroundings.
10) The change in Gibbs energy that accompanies the oxidation of C,H12O6(s) to carbon dioxide and
water vapor at 25°C is –2808 kJ mol'. How much glucose does a person of mass 65 kg need to
noncuma to olimb throuch 10 m2
Problem_Set 4_2020.pdf
Chapter_5_Chemi.pptx
Chapter_4_Physic..pptx
Chapter_3_Secon.pptx
ZoomOutlookPlug.msi
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2:56 PM
O Type here to search
3/31/2020
(3
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