Use the average bond enthalpies from Table 8.3 in your textbook to estimate ΔHΔH for the formation of CO2(g) by the following reaction:                                 CH4(g) + 2O2(g) --> CO2(g) +2H2O(g)

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Use the average bond enthalpies from Table 8.3 in your textbook to estimate ΔHΔH for the formation of CO2(g) by the following reaction:

                                CH4(g) + 2O2(g) --> CO2(g) +2H2O(g)

**TABLE 8.3: Average Bond Enthalpies (kJ/mol)**

This table lists the average bond enthalpies for various chemical bonds, measured in kilojoules per mole (kJ/mol). These values represent the average energy required to break one mole of the specified bonds in the gas phase.

**Single Bonds:**

- C—H: 413
- C—C: 348
- C—N: 293
- C—O: 358
- C—F: 485
- C—Cl: 328
- C—Br: 276
- C—I: 240
- C—S: 259

- N—H: 391
- N—N: 163
- N—O: 201
- N—F: 272
- N—Cl: 200
- N—Br: 243

- O—H: 463
- O—O: 146
- O—F: 190

- F—F: 155
- F—Cl: 253
- Cl—Cl: 242
- Cl—Br: 218
- Cl—I: 208

- Br—F: 237
- Br—Cl: 218
- Br—Br: 193

- I—Cl: 208
- I—Br: 175
- I—I: 151

- S—H: 339
- S—F: 327
- S—Cl: 253
- S—S: 266

- Si—H: 323
- Si—Si: 226
- Si—C: 301
- Si—O: 368
- Si—Cl: 464

**Multiple Bonds:**

- C=C: 614
- C≡C: 839
- C=N: 615
- C≡N: 891
- C=O: 799
- C≡O: 1072

- N=N: 418
- N≡N: 941
- N=O: 607

- O=O: 495

- S=O: 523
- S=S: 418

This table is important for understanding the energy changes involved in chemical reactions, particularly those involving bond breaking and formation.
Transcribed Image Text:**TABLE 8.3: Average Bond Enthalpies (kJ/mol)** This table lists the average bond enthalpies for various chemical bonds, measured in kilojoules per mole (kJ/mol). These values represent the average energy required to break one mole of the specified bonds in the gas phase. **Single Bonds:** - C—H: 413 - C—C: 348 - C—N: 293 - C—O: 358 - C—F: 485 - C—Cl: 328 - C—Br: 276 - C—I: 240 - C—S: 259 - N—H: 391 - N—N: 163 - N—O: 201 - N—F: 272 - N—Cl: 200 - N—Br: 243 - O—H: 463 - O—O: 146 - O—F: 190 - F—F: 155 - F—Cl: 253 - Cl—Cl: 242 - Cl—Br: 218 - Cl—I: 208 - Br—F: 237 - Br—Cl: 218 - Br—Br: 193 - I—Cl: 208 - I—Br: 175 - I—I: 151 - S—H: 339 - S—F: 327 - S—Cl: 253 - S—S: 266 - Si—H: 323 - Si—Si: 226 - Si—C: 301 - Si—O: 368 - Si—Cl: 464 **Multiple Bonds:** - C=C: 614 - C≡C: 839 - C=N: 615 - C≡N: 891 - C=O: 799 - C≡O: 1072 - N=N: 418 - N≡N: 941 - N=O: 607 - O=O: 495 - S=O: 523 - S=S: 418 This table is important for understanding the energy changes involved in chemical reactions, particularly those involving bond breaking and formation.
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