Photochemical smog is formed through a sequence of reactions, the first of which is N2(g) + O2(g) ⟶ 2NO(g). ΔHo for this reaction is 180.6 kJ/mol. Determine the minimum temperature at which this reaction becomes spontaneous. Assume that ΔHo and ΔSo do not vary with temperature. Substance So (J/mol*K) N2(g) 191.5 O2(g) 205.0 NO(g) 210.6 NO2(g) 240.5 O(g) 161.0 a) 7585 oC b) 7312 oC c) This reaction will not be spontaneous at any temperature. d) 7039 oC e) This reaction is spontaneous at all temperatures.
Photochemical smog is formed through a sequence of reactions, the first of which is N2(g) + O2(g) ⟶ 2NO(g). ΔHo for this reaction is 180.6 kJ/mol. Determine the minimum temperature at which this reaction becomes spontaneous. Assume that ΔHo and ΔSo do not vary with temperature. Substance So (J/mol*K) N2(g) 191.5 O2(g) 205.0 NO(g) 210.6 NO2(g) 240.5 O(g) 161.0 a) 7585 oC b) 7312 oC c) This reaction will not be spontaneous at any temperature. d) 7039 oC e) This reaction is spontaneous at all temperatures.
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter10: Entropy And The Second Law Of Thermodynamics
Section: Chapter Questions
Problem 10.50PAE: For the reaction NO(g)+NO2(g)N2O3(g) , use tabulated thermodynamic data to calculate H and S. Then...
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Photochemical smog is formed through a sequence of reactions, the first of which is N2(g) + O2(g) ⟶ 2NO(g). ΔHo for this reaction is 180.6 kJ/mol. Determine the minimum temperature at which this reaction becomes spontaneous. Assume that ΔHo and ΔSo do not vary with temperature.
|
Substance |
So (J/mol*K) |
|
N2(g) |
191.5 |
|
O2(g) |
205.0 |
|
NO(g) |
210.6 |
|
NO2(g) |
240.5 |
|
O(g) |
161.0 |
a) 7585 oC
b) 7312 oC
c) This reaction will not be spontaneous at any temperature.
d) 7039 oC
e) This reaction is spontaneous at all temperatures.
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