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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

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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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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.

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: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
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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