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Which reaction below is spontaneous at low temperatures and nonspontaneous at high temperatures? O CO2 (g) --> C (s) + O2 (g) DH°rxn = +393.5 kJ O 2 CO (g) + O2 (g) --> 2 CO2 (g) DH°pxn = -566 kJ O N2 (g) + O2 (g) --> 2 NO (g) DH°rxn = +182.6 kJ O C3H8 (g) + 5 O2 (g) --> 3 CO2 (g) + 4 H2O (g) DH°xn = -2044 kJ

Which reaction below is spontaneous at low temperatures and nonspontaneous at high temperatures? O CO2 (g) --> C (s) + O2 (g) DH°rxn = +393.5 kJ O 2 CO (g) + O2 (g) --> 2 CO2 (g) DH°pxn = -566 kJ O N2 (g) + O2 (g) --> 2 NO (g) DH°rxn = +182.6 kJ O C3H8 (g) + 5 O2 (g) --> 3 CO2 (g) + 4 H2O (g) DH°xn = -2044 kJ

Chemistry: Principles and Practice
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter17: Chemcial Thermodynamics
Section: Chapter Questions
Problem 17.78QE
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Which reaction below is spontaneous at low temperatures and nonspontaneous at high temperatures? O CO2 (g) --> C (s) + O2 (g) DH°rxn = +393.5 kJ O 2 CO (g) + O2 (g) --> 2 CO2 (g) DH°xn = -566 kJ O N2 (g) + O2 (g) --> 2 NO (g) DH°pxn = +182.6 kJ O C3H8 (g) + 5 O2 (g) --> 3 CO2 (g) + 4 H2O (g) DH°rxn = -2044 kJ
Transcribed Image Text:Which reaction below is spontaneous at low temperatures and nonspontaneous at high temperatures? O CO2 (g) --> C (s) + O2 (g) DH°rxn = +393.5 kJ O 2 CO (g) + O2 (g) --> 2 CO2 (g) DH°xn = -566 kJ O N2 (g) + O2 (g) --> 2 NO (g) DH°pxn = +182.6 kJ O C3H8 (g) + 5 O2 (g) --> 3 CO2 (g) + 4 H2O (g) DH°rxn = -2044 kJ
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