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 17.38QE
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Question
Transcribed Image Text:Calculate AS for NH3(g).
ASfº =
JK-1
Use data in the table below:
Substance
Ag(s)
AgCl(s)
Al(s)
Al₂O3(s)
C(s) (graphite)
CO(g)
CO₂(g)
CH4(g)
CH₂Cl(g)
CH₂OH(1)
Standard Entropies of Some Typical Substances at 298.15 K
Sº
(J mol-¹ K-¹)
40
76.1
C₂H₂(g)
C₂H4(g)
C₂H6(g)
C8H18(1)
C₂H,OH(/)
Ca(s)
CaCO3(s)
CaCl₂(s)
So
(J mol-¹ K-¹)
197.9
213.6
186.2
234.2
126.8
CO(NH2)2(s) 104.6
CO(NH2)2(aq) 173.8
200.8
219.8
229.5
466.9
161
42.55
96.2
28.3
51.0
5.69
41.4
92.9
114
Substance
CaO(s)
Ca(OH)2 (s)
CaSO4(s)
107
CaSO4+H₂O(s) 131
CaSO4-2H₂O(s) 194.0
223.0
27
90.0
130.6
188.7
Cl₂(g)
Fe(s)
Fe₂O3(s)
H₂(g)
H₂O(g)
H₂O(l)
HCI(g)
HNO3(1)
H₂SO4(1)
HC,H,O,(0)
Hg(1)
Hg(g)
K(s)
KCI(s)
K₂SO4(s)
69.96
186.7
155.6
157
160
76.1
175
64.18
82.59
176
Substance
N₂(g)
NH3(g)
NH4Cl(s)
NO(g)
NO₂(g)
N₂O(g)
N₂O4(g)
Na(s)
Na₂CO3(s)
NaHCO3(s)
NaCl(s)
NaOH(s)
Na2SO4(s)
0₂(8)
PbO(s)
S(s)
SO₂(g)
SO3(g)
Sº
(J mol-¹ K-¹)
191.5
192.5
94.6
210.6
240.5
220.0
304
51.0
136
102
72.38
64.18
149.4
205.0
67.8
31.9
248.5
256.2
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