Consider the following gas phase equilibrium at 298 K.N₂(g) + 3 H₂(g) = 2 NH3(g)(a) From standard free energies of formation, calculate the equilibrium constant K at 298 K. See Thermodynamic Properties.(answer with 3 significant figures)4.0✔(b) Calculate AG when a reaction mixture consists of 10. atm N₂, 10. atm H₂, and 1.0 atm NH3.4.0✔kJ/mol (answer with 3 significant figures)

Answered: Image /qna-images/answer/2bf58f5d-4275-4628-a751-b485fa009bcc.jpg

Consider the following gas phase equilibrium at 298 K. N₂(g) + 3 H₂(g) = 2 NH3(g) (a) From standard free energies of formation, calculate the equilibrium constant K at 298 K. See Thermodynamic Properties. 4.0✔ (answer with 3 significant figures) (b) Calculate AG when a reaction mixture consists of 10. atm N₂, 10. atm H₂, and 1.0 atm NH3. 4.0✔✓ kJ/mol (answer with 3 significant figures)

Consider the following gas phase equilibrium at 298 K. N₂(g) + 3 H₂(g) = 2 NH3(g) (a) From standard free energies of formation, calculate the equilibrium constant K at 298 K. See Thermodynamic Properties. 4.0✔ (answer with 3 significant figures) (b) Calculate AG when a reaction mixture consists of 10. atm N₂, 10. atm H₂, and 1.0 atm NH3. 4.0✔✓ kJ/mol (answer with 3 significant figures)

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter16: Thermodynamics: Directionality Of Chemical Reactions

Section: Chapter Questions

Problem 118QRT

See similar textbooks

Similar questions

Describe a nonchemical system that is not in equilibrium, and explain why equilibrium has not been achieved.
Consider the reaction NH4+(aq) H+(aq)+NH3(aq) Use G f for NH3(aq) at 25C=26.7 kJ/mol and the appropriate tables to calculate (a) G at 25C (b) Ka at 25C
Consider a metal ion A2+ and its nitrate salt, In an experiment, 35.00 mL of a 0.217 M solution of A(NO3)2 is made to react with 25.00 mL of 0.195 M NaOH. A precipitate, A(OH)2, forms. Along with the precipitation, the temperature increases from 24.8C to 28.2C. What is H for the precipitation of A(OH)2? The following assumptions can be made. â€¢ The density of the solution is 1.00 g/mL. â€¢ Volumes are additive. â€¢ The specific heat of the solution is 4.18 J/g C.
The equilibrium constant for a certain reaction increases by a factor of 6.67 when the temperature is increased from 300.0 K to 350.0 K. Calculate the standard change in enthalpy (H) for this reaction (assuming H is temperature-independent).
Hydrogen gas and iodine gas react to form hydrogen iodide. If 0.500 mol H2 and 1.00 mol I2 are placed in a closed 10.0-L vessel, what is the mole fraction of HI in the mixture when equilibrium is reached at 205C? Use data from Appendix C and any reasonable approximations to obtain K.
Use the data in Appendix J to calculate rG andKPat 25 C for the reaction 2HBr(g)+Cl2(g)2HCl(g)+Br2() Comment on the connection between the sign of rG and the magnitude ofKP.
For the system 2SO3(g)2SO2(g)+O2(g) K=1.32 at 627. What is the equilibrium constant at 555C?
Calculate the standard Gibbs free-energy change when SO3 forms from SO2 and O2 at 298 K. Why is sulfur trioxide an important substance to study? (Hint: What happens when it combines with water?)
Adenosine triphosphate, ATP, is used as a free-energy source by biological cells. (See the essay on page 624.) ATP hydrolyzes in the presence of enzymes to give ADP: ATP(aq)+H2O(l)ADP(aq)+H2PO4(aq);G=30.5kJ/molat25C Consider a hypothetical biochemical reaction of molecule A to give molecule B: A(aq)B(aq);G=+15.0kJ/molat25C Calculate the ratio [B]/[A] at 25C at equilibrium. Now consider this reaction coupled to the reaction for the hydrolysis of ATP: A(aq)+ATP(aq)+H2O(l)B(aq)+ADP(aq)+H2PO4(aq) If a cell maintains a high ratio of ATP to ADP and H2PO4 by continuously making ATP, the conversion of A to B can be made highly spontaneous. A characteristic value of this ratio is [ATP][ADP][H2PO4]=500 Calculate the ratio [B][A] in this case and compare it with the uncoupled reaction. Compared with the uncoupled reaction, how much larger is this ratio when coupled to the hydrolysis of ATP?