he Ostwald process for the commercial production of nitric acid involves three steps. 4 NH3(g) + 5 02(9) 4 NO(g) + 6 H20(g) 2 NO(g) + O2(g) → 2 NO2(9) 3 NO2(9) + H2O(1) → 2 HNO3(1) + NO(g) (a) Calculate AH°, ASº, AG°, and K (at 298 K) for each of the three steps in the Ostwald process (see Appendix 4). (Use the values you calculate for AH° and AS° to calculate AG first step second step third step ΔΗο -908 V kJ AH• -112 v k) AH° -74 V kJ AS° 181 V J/K As -147 V J/K -267 V J/K AG° -928 v kJ AG° -70 v kJ AG 4.672 x kJ K 4.16e168 K 8.99e11 K 0.15 (b) Calculate the equilibrium constant for the first step at 825°C, assuming AH® and AS° do not depend on temperature. 41.45

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...
icon
Related questions
icon
Concept explainers
Question

Hello! I was hoping you could explain step 3 of part A and part B of this question. I am struggling to understand how my delta G value is wrong and I think it is therefore messing up my K value... Thanks in advance!

The Ostwald process for the commercial production of nitric acid involves three steps.
4 NH3(g) + 5 02(g) T 4 NO(g) + 6 H20(g)
2 NO(g) + 02(g) → 2 NO2(g)
3 NO2(g) + H20(1) → 2 HNO3(/) + NO(g)
(a) Calculate AH°, AS°, AG°, and K (at 298 K) for each of the three steps in the Ostwald process (see Appendix 4). (Use the values you calculate for AH° and AS° to calculate AG°.)
first step
second step
third step
AH° -908
kJ
AH° -112
V kJ
ΔΗ
-74
V kJ
As° 181
V J/K
AS° -147
V J/K
AS°
-267
J/K
AG° -928
V kJ
AG° -70
V kJ
AG° 4.672 x kJ
K
4.16e168
K
8.99e11
K
0.15
(b) Calculate the equilibrium constant for the first step at 825°C, assuming AH° and AS° do not depend on temperature.
41.45
(c) Is there a thermodynamic reason for the high temperature in the first step assuming standard conditions?
O Yes
O No
Explain.
Transcribed Image Text:The Ostwald process for the commercial production of nitric acid involves three steps. 4 NH3(g) + 5 02(g) T 4 NO(g) + 6 H20(g) 2 NO(g) + 02(g) → 2 NO2(g) 3 NO2(g) + H20(1) → 2 HNO3(/) + NO(g) (a) Calculate AH°, AS°, AG°, and K (at 298 K) for each of the three steps in the Ostwald process (see Appendix 4). (Use the values you calculate for AH° and AS° to calculate AG°.) first step second step third step AH° -908 kJ AH° -112 V kJ ΔΗ -74 V kJ As° 181 V J/K AS° -147 V J/K AS° -267 J/K AG° -928 V kJ AG° -70 V kJ AG° 4.672 x kJ K 4.16e168 K 8.99e11 K 0.15 (b) Calculate the equilibrium constant for the first step at 825°C, assuming AH° and AS° do not depend on temperature. 41.45 (c) Is there a thermodynamic reason for the high temperature in the first step assuming standard conditions? O Yes O No Explain.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 2 images

Blurred answer
Knowledge Booster
Ionic Equilibrium
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY