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4. The overall process occurring in a blast furnace during the production of iron is the reaction of Fe₂O3 and carbon to produce Fe and CO₂. a) Calculate AH°rxn and AS rxn assuming carbon is graphite. b) Calculate AG° at 298K. Is the reaction spontaneous at this temperature? c) Is the reaction spontaneous at a low or a high temperature? Explain. d) At what temperature does the reaction become spontaneous?

4. The overall process occurring in a blast furnace during the production of iron is the reaction of Fe₂O3 and carbon to produce Fe and CO₂. a) Calculate AH°rxn and AS rxn assuming carbon is graphite. b) Calculate AG° at 298K. Is the reaction spontaneous at this temperature? c) Is the reaction spontaneous at a low or a high temperature? Explain. d) At what temperature does the reaction become spontaneous?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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please can you please do questions 4, 5, 7, 8, and 12 please I would really appreciate it if you can do all

I would appreciate if you could do all 

please answer super super super fast I really need it its really important answer fast

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3. 4. 5. 6. 7. 8. Predict the sign of ASº, rxn a) 2K (s) + F2(g) b) 3 NO2(g) + H₂O(1) Also calculate the AS formed? Why? rxn for the following processes. 2KF (s) 2HNO3(1) + NO(g) 3(aq) →>> value for part b using values from a table. How would the value of AS°n differ if HNO3 The overall process occurring in a blast furnace during the production of iron is the reaction of Fe₂O3 and carbon to produce Fe and CO₂. a) Calculate AH°, and AS rxn assuming carbon is graphite. rxn b) Calculate AG° at 298K. Is the reaction spontaneous at this temperature? c) Is the reaction spontaneous at a low or a high temperature? Explain. d) At what temperature does the reaction become spontaneous? A student is upset because the instructor has marked the equation CH4(g) + H₂O(g) CH3OH) + H₂(g) wrong on a test. If you were an instructor, how would you show the student that the reaction does not occur? For the reaction: N2(g) + O2(g) 2NO(g) a) Determine AHº and ASºn for the reaction. rxn rxn b) Assuming the values are relatively independent of temperature, find AGº, at 25°C and at 100°C. rxn were For the phase transition M(1) M($2) of a metal M from solid (1) to solid (2), AH° = -14.07 kJ and AS° = -48.0 J/K at -84 °C. a) What is the value of AGº for the transition? b) At what temperature does AGº = 0, and what is the significance of that temperature? c) Which phase is favored at 0 °C? How would the entropy of water vapor change if it were compressed at 150 °C?
Transcribed Image Text:3. 4. 5. 6. 7. 8. Predict the sign of ASº, rxn a) 2K (s) + F2(g) b) 3 NO2(g) + H₂O(1) Also calculate the AS formed? Why? rxn for the following processes. 2KF (s) 2HNO3(1) + NO(g) 3(aq) →>> value for part b using values from a table. How would the value of AS°n differ if HNO3 The overall process occurring in a blast furnace during the production of iron is the reaction of Fe₂O3 and carbon to produce Fe and CO₂. a) Calculate AH°, and AS rxn assuming carbon is graphite. rxn b) Calculate AG° at 298K. Is the reaction spontaneous at this temperature? c) Is the reaction spontaneous at a low or a high temperature? Explain. d) At what temperature does the reaction become spontaneous? A student is upset because the instructor has marked the equation CH4(g) + H₂O(g) CH3OH) + H₂(g) wrong on a test. If you were an instructor, how would you show the student that the reaction does not occur? For the reaction: N2(g) + O2(g) 2NO(g) a) Determine AHº and ASºn for the reaction. rxn rxn b) Assuming the values are relatively independent of temperature, find AGº, at 25°C and at 100°C. rxn were For the phase transition M(1) M($2) of a metal M from solid (1) to solid (2), AH° = -14.07 kJ and AS° = -48.0 J/K at -84 °C. a) What is the value of AGº for the transition? b) At what temperature does AGº = 0, and what is the significance of that temperature? c) Which phase is favored at 0 °C? How would the entropy of water vapor change if it were compressed at 150 °C?
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 AHº? (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 AGº=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 AHº? (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 AGº=AH° - TAS°) d) Rationalize the sign of ASº with the structure relaxed versus stretched. Which is the more ordered state?
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