TABLE 5.4 Average Bond Enthalpies (kJ/mol) 391 413 N-H 0-H 463 155 348 163 0-0 146 614 253 C=C 201 495 Cl-F C-N 190 242 293 N-F 272 0-F Cl-CI N-CI 358 200 0-CI 203 799 N-Br 243 0-I 234 Br-F 237 C-F 485 Br-Cl 218 С—СІ 328 Н-н 436 Br –Br 193 С -Вг 276 H-F 567 431 208 C-I 240 Н—СІ I-CI 1— Вг 175 Н-Br 366 Н—І 299 I-I 151 APPENDIX C Thermodynamic Quantitles for Selected Substances at 298.15 K (25 "C) 1091 дн; (kj/mol) AG; S* S° дн AG; (kj/mol) -245.6 (kj/mol) (i/mol-K) Substance Substance (i/mol-K) (kj/mol) Vanadium SOCI (1) H,S(8) H2SO4(aq) H,SO,(1) 205.6 20.1 182.2 -20.17 -33.01 514.2 453.1 V(g) V(s) -909.3 -744.5 28.9 156.1 -689.9 -814.0 Zinc Titanium 130.7 95.2 160.9 Zn(g) Ti(g) Ti(s) 468 180.3 422 41.63 Zn(s) ZnCl,(s) ZnO(s) -369.4 -415.1 111.5 30.76 -763.2 -726.8 354.9 TICL4(8) TICI4(1) TIO2(s) -318.2 -348.0 43.9 -804.2 -728.1 221.9 -889.4 50.29 -944.7
TABLE 5.4 Average Bond Enthalpies (kJ/mol) 391 413 N-H 0-H 463 155 348 163 0-0 146 614 253 C=C 201 495 Cl-F C-N 190 242 293 N-F 272 0-F Cl-CI N-CI 358 200 0-CI 203 799 N-Br 243 0-I 234 Br-F 237 C-F 485 Br-Cl 218 С—СІ 328 Н-н 436 Br –Br 193 С -Вг 276 H-F 567 431 208 C-I 240 Н—СІ I-CI 1— Вг 175 Н-Br 366 Н—І 299 I-I 151 APPENDIX C Thermodynamic Quantitles for Selected Substances at 298.15 K (25 "C) 1091 дн; (kj/mol) AG; S* S° дн AG; (kj/mol) -245.6 (kj/mol) (i/mol-K) Substance Substance (i/mol-K) (kj/mol) Vanadium SOCI (1) H,S(8) H2SO4(aq) H,SO,(1) 205.6 20.1 182.2 -20.17 -33.01 514.2 453.1 V(g) V(s) -909.3 -744.5 28.9 156.1 -689.9 -814.0 Zinc Titanium 130.7 95.2 160.9 Zn(g) Ti(g) Ti(s) 468 180.3 422 41.63 Zn(s) ZnCl,(s) ZnO(s) -369.4 -415.1 111.5 30.76 -763.2 -726.8 354.9 TICL4(8) TICI4(1) TIO2(s) -318.2 -348.0 43.9 -804.2 -728.1 221.9 -889.4 50.29 -944.7
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.37QP
Related questions
Question
Consider the reaction H2(g) + I2(s)---->2 HI(g). (a) Use the
bond enthalpies in Table 5.4 to estimate ΔH for this reaction,
ignoring the fact that iodine is in the solid state. (b) Without
doing a calculation, predict whether your estimate in part (a)
is more negative or less negative than the true reaction enthalpy.
(c) Use the enthalpies of formation in Appendix C to
determine the true reaction enthalpy.
Transcribed Image Text:TABLE 5.4 Average Bond Enthalpies (kJ/mol)
391
413
N-H
0-H
463
155
348
163
0-0
146
614
253
C=C
201
495
Cl-F
C-N
190
242
293
N-F
272
0-F
Cl-CI
N-CI
358
200
0-CI
203
799
N-Br
243
0-I
234
Br-F
237
C-F
485
Br-Cl
218
С—СІ
328
Н-н
436
Br –Br
193
С -Вг
276
H-F
567
431
208
C-I
240
Н—СІ
I-CI
1— Вг
175
Н-Br
366
Н—І
299
I-I
151
Transcribed Image Text:APPENDIX C Thermodynamic Quantitles for Selected Substances at 298.15 K (25 "C)
1091
дн;
(kj/mol)
AG;
S*
S°
дн
AG;
(kj/mol)
-245.6
(kj/mol)
(i/mol-K)
Substance
Substance
(i/mol-K)
(kj/mol)
Vanadium
SOCI (1)
H,S(8)
H2SO4(aq)
H,SO,(1)
205.6
20.1
182.2
-20.17
-33.01
514.2
453.1
V(g)
V(s)
-909.3
-744.5
28.9
156.1
-689.9
-814.0
Zinc
Titanium
130.7
95.2
160.9
Zn(g)
Ti(g)
Ti(s)
468
180.3
422
41.63
Zn(s)
ZnCl,(s)
ZnO(s)
-369.4
-415.1
111.5
30.76
-763.2
-726.8
354.9
TICL4(8)
TICI4(1)
TIO2(s)
-318.2
-348.0
43.9
-804.2
-728.1
221.9
-889.4
50.29
-944.7
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