For the combustion of ethane (C₂H, (g)) shown below. a. Calculate the AH° using standard enthalpies of formation (AHº) from Appendix 4 in the back of your Zumdahl textbook. b. Calculate the AH° using bond energies from Table 8.5 in the Zumdahl textbook. (Note that the C-O bond energy in CO₂ is 799 kJ/mol) surr univ C. Calculate the AG° (in kJ/mol reaction), the AS (in J/K*mol reaction), the AS (in J/K*mol reaction) and the AS.... (in J/K*mol reaction) at 298K using Appendix 4 in the back of your Zumdahl textbook. (Different approaches can lead to modestly different
For the combustion of ethane (C₂H, (g)) shown below. a. Calculate the AH° using standard enthalpies of formation (AHº) from Appendix 4 in the back of your Zumdahl textbook. b. Calculate the AH° using bond energies from Table 8.5 in the Zumdahl textbook. (Note that the C-O bond energy in CO₂ is 799 kJ/mol) surr univ C. Calculate the AG° (in kJ/mol reaction), the AS (in J/K*mol reaction), the AS (in J/K*mol reaction) and the AS.... (in J/K*mol reaction) at 298K using Appendix 4 in the back of your Zumdahl textbook. (Different approaches can lead to modestly different
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
Question
Solutions for (a),(b) and (c) please.
Transcribed Image Text:1. For the combustion of ethane (C₂H, (g)) shown below.
a. Calculate the AH° using standard enthalpies of formation (AHº) from
Appendix 4 in the back of your Zumdahl textbook.
b. Calculate the AH° using bond energies from Table 8.5 in the Zumdahl
textbook. (Note that the C=O bond energy in CO₂ is 799 kJ/mol)
surr
c. Calculate the AG° (in kJ/mol reaction), the AS (in J/K*mol
reaction), the AS° (in J/K*mol reaction) and the AS uniy (in J/K*mol
reaction) at 298K using Appendix 4 in the back of your Zumdahl
textbook. (Different approaches can lead to modestly different
answers.)
2C₂H₂(g) +70₂(g) à 4CO₂(g) + 6H₂O(g)
Transcribed Image Text:Substance
and State
Nickel
Ni(s)
NiCl₂(s)
NiO(s)
Ni(OH)₂ (s)
NiS(s)
Nitrogen
me
N₂(g)
NH,(9)
NH,(aq)
Nhì (aq)
NO(g)
NO₂(g)
N₂O(g)
N₂O(g)
N₂O₂(0)
N₂O3(s)
N₂H₂(0)
N₂H₂CH₂(0)
HNO,(aq)
HNO₂(0)
NH,CIO4(s)
NH₂Cl(s)
Oxygen
O₂(g)
O(g)
0₂(g)
Phosphorus
P(s) (white)
P(s) (red)
P(s) (black)
AH
(kJ/mol)
316
241
538
93
0
46
-80
132
90
34
82
10
-20
-42
51
54
207
-174
-295
-314
0
249
143
0
-18
-39
AG₁
(kJ/mol)
0
272
-213
-453
-90
0
17
-27
-79
87
52
104
98
97
134
149
180
-111
-81
-89
-203
Sº
(J/K-mol)
0
232
163
0
-12
-33
30
107
38
53
192
193
111
113
211
240
220
304
209
178
121
166
146
156
186
96
205
161
239
41
23
23
Hi
nol)
0
76
77
04
0
19
32
16
55
0
19
14
AGi
(kJ/mol)
0
- 1582
-629
0
- 1139
-552
-1353
0
-569
-815
(J/K.mol)
28
51
111
67
112
70
132
10
14
47
Hydrogen
H₂(g)
H(g)
H+ (aq)
OH (aq)
H₂O(0)
H₂O(g)
lodine
12(5)
1₂(g)
Substance
and State
Substance
and State
Carbon, continued
CO₂(g)
CH₂(g)
CH₂OH(g)
CH₂OH()
H₂CO(g)
HCOOH(g)
HCN(g)
C₂H₂(g)
C₂H₂(g)
CH,CHO(g)
C₂H5OH(1)
C₂H6(g)
C₂H6(g)
C3H₂(g)
Efor
AHi
(kJ/mol)
AH;
(kJ/mol)
-393.5
-75
-201
-239
- 116
-363
135.1
227
52
- 166
-278
-84.7
20.9
-104
0
217
0
-230
-286
-242
0
62
AGi
(kJ/mol)
-394
-51
-163
-166
-110
-351
125
209
68
- 129
- 175
AGi
(kJ/mol)
-32.9
62.7
-24
0
203
0
- 157
-237
-229
0
19
5
(J/K-mol)
S
(J/K.mol)
214
186
240
127
219
249
202
201
219
250
161
229.5
266.9
270
131
115
0
-11
70
189
TOTHO HD
116
261
Nicke
Ni(s)
NiCl₂
NiO(:
Ni(Ol
NiS(s
Nitrc
N₂(g
NH3(
NH3
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Step 1: Interpretation of problem statement
VIEWStep 2: Determine Ho using standard enthalpy of formation
VIEWStep 3: Determine Ho using Bond energies
VIEWStep 4: Determine Ho using Bond energies
VIEWStep 5: Part (C) Determine So surrounding and So (reaction ) and So (universe)
VIEWStep 6: Determine Go reaction
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