Use the following tabulated thermodynamic data to calculate the entropy change (in J/K) of each of the reactions listed below. (Assume standard thermodynamic conditions of 1.00 atm and 298.15 K.) Substance s (J- mol - K) CO() 197.6 co,(g) 213.6 205.0 H, (8) 130.6 H,O(K) 188.7 S(rhombic) 31.8 so, (K) 248.1 a. So (8) + 2 H,(8) - S(thombie) + 2 H,0(s) /K b. 2 CO(g) + Os(g) 2 CO,(g) J/K

Chemistry: The Molecular Science
5th Edition
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Chapter16: Thermodynamics: Directionality Of Chemical Reactions
Section: Chapter Questions
Problem 92QRT: The standard molar entropy of methanol vapor, CH3OH(g), is 239.8 J K1 mol-1. (a) Calculate the...
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Estimate the temperature range (in K) over which each of the following reactions is spontaneous.
(a) ZnS(s) → Zn(s) + S(g)
This reaction is spontaneous at temperatures
K.
(b) FeS2 (s) → Fe(s) + 2 S(g)
This reaction is spontaneous at temperatures
K.
(c) N2(g) + 3 H2 (g) →
2 NH3 (g)
This reaction is spontaneous at temperatures
K.
Transcribed Image Text:Estimate the temperature range (in K) over which each of the following reactions is spontaneous. (a) ZnS(s) → Zn(s) + S(g) This reaction is spontaneous at temperatures K. (b) FeS2 (s) → Fe(s) + 2 S(g) This reaction is spontaneous at temperatures K. (c) N2(g) + 3 H2 (g) → 2 NH3 (g) This reaction is spontaneous at temperatures K.
Use the following tabulated thermodynamic data to calculate the entropy change (in J/K) of each of the reactions listed below. (Assume standard thermodynamic conditions of
1.00 atm and 298.15 K.)
Substance s (J - mol 1.K)
CO(8)
197.6
co, (s)
0, (e)
213.6
205.0
H2(g)
130.6
H,O(g)
188.7
S(rhombic)
31.8
so, (K)
248.1
a. SO:(g) + 2 H2(g) →
S(rhombic) + 2 H,0(g)
J/K
b. 2 CO(g) + Oz(s) + 2 CO2(g)
J/K
Transcribed Image Text:Use the following tabulated thermodynamic data to calculate the entropy change (in J/K) of each of the reactions listed below. (Assume standard thermodynamic conditions of 1.00 atm and 298.15 K.) Substance s (J - mol 1.K) CO(8) 197.6 co, (s) 0, (e) 213.6 205.0 H2(g) 130.6 H,O(g) 188.7 S(rhombic) 31.8 so, (K) 248.1 a. SO:(g) + 2 H2(g) → S(rhombic) + 2 H,0(g) J/K b. 2 CO(g) + Oz(s) + 2 CO2(g) J/K
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