37. Without doing any calculations, determine the signs of AS and ASur for each chemical reaction. In addition, predict under what temperatures (all temperatures, low temperatures, or high temperatures), if any, the reaction is spontaneous. a. C,Hg(g) + 5 0:(g) 3 CO,(g) + 4 H0(g) - AHan = -2044 kJ b. N(8) + Oz(8) c. 2 N2(g) + O2(8) d. 4 NH,(8) + 5 0:(g) 2 NO(8) AHn = +182.6 kJ +163.2 kJ %3D 2 N;0(g) AHan 4 NO(g) + 6 H,0(g) AHan -906 kJ

Chemistry: Principles and Practice
3rd Edition
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Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
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Chapter17: Chemcial Thermodynamics
Section: Chapter Questions
Problem 17.77QE
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37. Without doing any calculations, determine the signs of AS
and ASur for each chemical reaction. In addition, predict under
what temperatures (all temperatures, low temperatures, or high
temperatures), if any, the reaction is spontaneous.
a. C,Hg(g) + 5 0:(g)
3 CO,(g) + 4 H0(g)
-
AHan = -2044 kJ
b. N(8) + Oz(8)
c. 2 N2(g) + O2(8)
d. 4 NH,(8) + 5 0:(g)
2 NO(8) AHn = +182.6 kJ
+163.2 kJ
%3D
2 N;0(g) AHan
4 NO(g) + 6 H,0(g)
AHan
-906 kJ
Transcribed Image Text:37. Without doing any calculations, determine the signs of AS and ASur for each chemical reaction. In addition, predict under what temperatures (all temperatures, low temperatures, or high temperatures), if any, the reaction is spontaneous. a. C,Hg(g) + 5 0:(g) 3 CO,(g) + 4 H0(g) - AHan = -2044 kJ b. N(8) + Oz(8) c. 2 N2(g) + O2(8) d. 4 NH,(8) + 5 0:(g) 2 NO(8) AHn = +182.6 kJ +163.2 kJ %3D 2 N;0(g) AHan 4 NO(g) + 6 H,0(g) AHan -906 kJ
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