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TABLE 8.3 Average Bond Enthalpies (kJ/mol) Single Bonds C-H 413 N-H 391 О—н 463 F-F 155 348 N-N 163 0-0 146 293 201 0-F 190 CI-F 253 C-0 358 N-F 272 0-CI 203 Cl-CI 242 C-F 485 N-CI 200 0-I 234 C-CI 328 N-Br 243 Br-F 237 C-Br 276 S-H 339 Br-CI 218 C-I 240 Н-Н 436 S-F 327 Br-Br 193 C-S 259 Н—F 567 S-CI 253 Н—СІ 431 S-Br 218 I-CI 208 Si-H 323 Н—Br 366 S-S 266 I-Br 175 Si-Si 226 Н-I 299 I-I 151 Si-C 301 Si-O 368 Si-CI 464 Multiple Bonds 614 N=N 418 0=0 495 839 N=N 941 615 607 523 C=N 891 S=S 418 799 1072

TABLE 8.3 Average Bond Enthalpies (kJ/mol) Single Bonds C-H 413 N-H 391 О—н 463 F-F 155 348 N-N 163 0-0 146 293 201 0-F 190 CI-F 253 C-0 358 N-F 272 0-CI 203 Cl-CI 242 C-F 485 N-CI 200 0-I 234 C-CI 328 N-Br 243 Br-F 237 C-Br 276 S-H 339 Br-CI 218 C-I 240 Н-Н 436 S-F 327 Br-Br 193 C-S 259 Н—F 567 S-CI 253 Н—СІ 431 S-Br 218 I-CI 208 Si-H 323 Н—Br 366 S-S 266 I-Br 175 Si-Si 226 Н-I 299 I-I 151 Si-C 301 Si-O 368 Si-CI 464 Multiple Bonds 614 N=N 418 0=0 495 839 N=N 941 615 607 523 C=N 891 S=S 418 799 1072

General Chemistry - Standalone book (MindTap Course List)
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 6.62QP: With a platinum catalyst, ammonia will burn in oxygen to give nitric oxide, NO....
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The O¬H bond lengths in the water molecule (H2O) are
0.96 Å, and the H—O—H angle is 104.5°. The dipole moment
of the water molecule is 1.85 D. (a) In what directions
do the bond dipoles of the O—H bonds point? In what direction
does the dipole moment vector of the water molecule
point? (b) Calculate the magnitude of the bond dipole
of the O—H bonds. (Note: You will need to use vector addition to do this.) (c) Compare your answer from part (b)
to the dipole moments of the hydrogen halides (Table 8.3).
Is your answer in accord with the relative electronegativity
of oxygen?

TABLE 8.3 Average Bond Enthalpies (kJ/mol) Single Bonds C-H 413 N-H 391 О—н 463 F-F 155 348 N-N 163 0-0 146 293 201 0-F 190 CI-F 253 C-0 358 N-F 272 0-CI 203 Cl-CI 242 C-F 485 N-CI 200 0-I 234 C-CI 328 N-Br 243 Br-F 237 C-Br 276 S-H 339 Br-CI 218 C-I 240 Н-Н 436 S-F 327 Br-Br 193 C-S 259 Н—F 567 S-CI 253 Н—СІ 431 S-Br 218 I-CI 208 Si-H 323 Н—Br 366 S-S 266 I-Br 175 Si-Si 226 Н-I 299 I-I 151 Si-C 301 Si-O 368 Si-CI 464 Multiple Bonds 614 N=N 418 0=0 495 839 N=N 941 615 607 523 C=N 891 S=S 418 799 1072
Transcribed Image Text:TABLE 8.3 Average Bond Enthalpies (kJ/mol) Single Bonds C-H 413 N-H 391 О—н 463 F-F 155 348 N-N 163 0-0 146 293 201 0-F 190 CI-F 253 C-0 358 N-F 272 0-CI 203 Cl-CI 242 C-F 485 N-CI 200 0-I 234 C-CI 328 N-Br 243 Br-F 237 C-Br 276 S-H 339 Br-CI 218 C-I 240 Н-Н 436 S-F 327 Br-Br 193 C-S 259 Н—F 567 S-CI 253 Н—СІ 431 S-Br 218 I-CI 208 Si-H 323 Н—Br 366 S-S 266 I-Br 175 Si-Si 226 Н-I 299 I-I 151 Si-C 301 Si-O 368 Si-CI 464 Multiple Bonds 614 N=N 418 0=0 495 839 N=N 941 615 607 523 C=N 891 S=S 418 799 1072
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