Draw a structural formula of the R configuration of the compound shown below.
- The energy difference is kJ/mol.
- In the more stable chair:
- The vinyl(ethenyl) group is in the _________axial,equatorial,both position.
- The methyl group is in the _________axial,equatorial,both position.
- At 25°C the equilibrium percent of the more stable chair conformation is approximately _____60,65,70,75,80,85,90,95,>95.
Answers:
- The energy difference is kJ/mol.
- In the more stable chair:
- The chloro group is in the _________axialequatorialboth position.
- The methyl group is in the _________axial,equatorial,both, position.
- At 25°C the equilibrium percent of the more stable chair conformation is approximately _____60,65,70,75,80,85,90,95>95.
For the reaction below:
a. Estimate the gas phase enthalpy change using bond dissociation enthalpies from the OWL Table Reference, not data from your text. Click the References button and then click the Tables link on the drop-down that appears. Include algebraic sign and units.
b. Is the reaction exothermic or endothermic? _________exo endo neither
c. Is the reaction likely to proceed spontaneously in the direction written? _________yes no uncertain
For the reaction below:
a. Estimate the gas phase enthalpy change using bond dissociation enthalpies from the OWL Table Reference, not data from your text. Click the References button and then click the Tables link on the drop-down that appears. Include algebraic sign and units.
b. Is the reaction exothermic or endothermic? _________exo endo neither
c. Is the reaction likely to proceed spontaneously in the direction written? _________yes no uncertain
| X \ Y= | H | F | Cl | Br | I | OH | NH2 | CH3 | CH3CH2- | CN |
|---|---|---|---|---|---|---|---|---|---|---|
| CH3- | 439 (105) | 452 (108) | 356 (85) | 293 (70) | 238 (57) | 385 (92) | 356 (85) | 377 (90) | 368 (88) | 510 (122) |
| CH3CH2- | 423 (101) | 444 (106) | 335 (80) | 285 (68) | 228 (53) | 380 (91) | 356 (85) | 368 (88) | 336 (80) | |
| (CH3)2CH- | 409 (98) | 448 (107) | 339 (81) | 274 (65) | 226 (54) | 385 (92) | 351(84) | |||
| (CH3)3C- | 404 (97) | 331 (79) | 263 (63) | 213 (51) | 380 (91) | 339 (81) | ||||
| CH2=CHCH2- | 362 (86.5) | 289 (69) | 230 (55) | 172 (41) | 305 (73) | |||||
 |
376 (90) | 301 (72) | 243 (58) | 201 (48) | 332 (79) | |||||
| CH2=CH- | 465 (111) | 368 (87) | 259 (62) | 406 (97) | 536 (128) | |||||
 |
473 (113) | 527 (126) | 402 (96) | 337 (80.5) | 274 (65) | 464 (111) | 427 (102) | 377 (90) | ||
| CH3O- | 436 (104) | 333 (80) | ||||||||
| H- | 435 (104) | 569 (136) | 431 (103) | 368 (88) | 297 (71) | 498 (119) | 449 (107) | 439 (105) | 423 (101) | 543 (130) |
Homework Answers
Add Answer to:
Draw a structural formula of the R configuration of the compound
shown below.
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Use the References to access important values if needed for this question. For the reaction below H CI . H-C + + a. Estimate the gas phase enthalpy change using bond dissociation enthalpies from the OWL Table Reference, not data from your text. Click the References button and then click the Tables link on the drop-down that appears. Include algebraic sign and units. b. Is the reaction exothermic or endothermic? c. Is the reaction likely to proceed spontaneously in the...
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Bond Dissociation Energies, Dº298, for X-Y kJ/mol (kcal/mol) X\Y= H F Ci Br I OH NH2...
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For the reaction below CHy CH a. Estimate the gas phase enthalpy change using bond dissociation e...
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For the reaction below CH&CH2-HHO- OH CH3CH2-OH +H OhH References button and then click the Table...
For the reaction below CH&CH2-HHO- OH CH3CH2-OH +H OhH References button and then click the Tables link on the drop-down that appears. Include algebraic sign and units. b. Is the reaction exothermic or endothermic? c. Is the reaction likely to proceed spontaneously in the direction written? Bond Dissociation Energies, D°298, for X kJ/mol (kcal/mol) -Y Cl он CH3 CH3CH2 CH3- 439 (105) 452 (108) 356 (85) 293 (70) 238 (57) 385 (92)356 (85) 377 (90) 368 (88) 510 (122) 336...
Calculation of heat of reaction For the each reaction, A.) estimate for gas phase and for...
Calculation of heat of reaction
For the each reaction,
A.) estimate for gas phase and for P change using bonded
dissociation energies from the table
B.) is the reaction exothermic or endothermic
C.) is the reaction likely to proceed spontaneously in the
direction written?
Bond Dissociation Energies Bond Dissociation Energies, D°298, for X-Y kJ/mol (kcal/mol) cl Br он NH2 CH3 CHCH2 CN CH3 439 (105) 452 (108) 356 (85) 293 (70) 238 (57) 385 (92) 356 (85) 377 (90) 368...
a. Estimate the gas phase enthalpy change using bond dissociation enthalpies from the OWL Table Reference, not data from...
a. Estimate the gas phase enthalpy change
using bond dissociation enthalpies from the OWL Table
Reference, not data from your text. Click the
References button and then click the
Tables link on the drop-down that appears. Include
algebraic sign and units.
b. Is the reaction exothermic or
endothermic?
c. Is the reaction likely to proceed
spontaneously in the direction written?
Use the References to access important values if needed for this question For the reaction below: Br OH -CH CHy-...
Problem #3 Calculate AH° for the following reaction using the bond energies found in Table 6.1...
Problem #3 Calculate AH° for the following reaction using the bond energies found in Table 6.1 on page 228. Is this reaction spontaneous? (CH3)3C-H + 12 (CH3)3C-1 + HI TABLE 6.1 BOND DISSOCIATION ENERGIES (AH) OF COMMON BONDS KJ/MOL KCAL/MOL H2C=CH-CH3 HC-C-CH KJ/MOL KCAL/MOL 385 92 489117 KJ/MOL KCAL/MOL 444 106 335 80 285 Bonds to H. H-H H-CH3 H-CH2CH3 H-CH(CH3)2 H-C(CH3)3 (CH3)2CH-F (CH3)2CH-CI (CH3)2CH-Br (CH3)2CH- (CH3)2CH-OH 68 222 435 104 435 104 41098 39795 91 473 113 53 381...
a. Use strain energy increments in the OWL Table Reference (see References button, Strain Energy Increments) to calcula...
a. Use strain energy increments in the OWL Table Reference (see References button, Strain Energy Increments) to calculate the energy difference between the two chair conformations of the compound below. b. Specify substituent positions axial or equatorial) in the more stable chair. c. Estimate the percent of the more stable chair at equilibrium at 25°C. (To determine the percent of the more stable chair at equilibrium, first calculate Keq, and then use this value to find the percentage.) A CH3...
a. Use strain energy increments in the OWL Table Reference (see References button, Strain Energy Increments)...
a. Use strain energy increments in the OWL Table Reference (see References button, Strain Energy Increments) to calculate the energy difference between the two chair conformations of the compound below. b. Specify substituent positions (axial or equatorial) in the more stable chair. c. Estimate the percent of the more stable chair at equilibrium at 25°C. (To determine the percent of the more stable chair at equilibrium, first calculate Keq, and then use this value to find the percentage.) OH H3C...
Use the References to access important values if needed for this question. For the reaction below H CI . H-C + + a. Estimate the gas phase enthalpy change using bond dissociation enthalpies from the OWL Table Reference, not data from your text. Click the References button and then click the Tables link on the drop-down that appears. Include algebraic sign and units. b. Is the reaction exothermic or endothermic? c. Is the reaction likely to proceed spontaneously in the...
For the reaction below: CH4 •он CH3 H-OH a. Estimate the gas phase enthalpy change using bond dissociation enthalpies from the OWL Table Reference, not data from your text. Click the References button and then click the Tables link on the drop-down that appears. Include algebraic sign and units. b. Is the reaction exothermic or endothermic? c. Is the reaction likely to proceed spontaneously in the direction written? For the reaction below: CH4 + Fz CH3-F H/F a. Estimate the...
Bond Dissociation Energies, Dº298, for X-Y kJ/mol (kcal/mol) X\Y= H F Ci Br I OH NH2 CH3 CH3CH2- CN CH3- CH3CH2 (CH3)2CH- 439 (105) 452 (108) 356 (85) 293 (70) 423 (101) 444 (106) 335 (80) 285 (68) 238 (57) 385 (92) 356 (85) 377 (90) 368 (88) 510 (122) 228 (53) 380 (91) 356 (85) 368 (88) 336 (80) 409 (98) 448 (107) 339 (81) 274 (65) 226 (54) 385 (92) 351(84) 331 (79) 263 (63) 213 (51) 380...
For the reaction below CHy CH a. Estimate the gas phase enthalpy change using bond dissociation enthalpies from the OWL. Table Reference, not data from your text. button and then click the Tables link on the drop-down that appears. Include algebrakc sign and units b. Is the reaction exothermic or endothermic? c. Is the reaction likely to proceed spontaneously in the direction written? Submit Answer Retry Entire Group 1 more group attempt remaining 1 For the reaction below: a. Estimate...
For the reaction below CH&CH2-HHO- OH CH3CH2-OH +H OhH References button and then click the Tables link on the drop-down that appears. Include algebraic sign and units. b. Is the reaction exothermic or endothermic? c. Is the reaction likely to proceed spontaneously in the direction written? Bond Dissociation Energies, D°298, for X kJ/mol (kcal/mol) -Y Cl он CH3 CH3CH2 CH3- 439 (105) 452 (108) 356 (85) 293 (70) 238 (57) 385 (92)356 (85) 377 (90) 368 (88) 510 (122) 336...
Calculation of heat of reaction
For the each reaction,
A.) estimate for gas phase and for P change using bonded
dissociation energies from the table
B.) is the reaction exothermic or endothermic
C.) is the reaction likely to proceed spontaneously in the
direction written?
Bond Dissociation Energies Bond Dissociation Energies, D°298, for X-Y kJ/mol (kcal/mol) cl Br он NH2 CH3 CHCH2 CN CH3 439 (105) 452 (108) 356 (85) 293 (70) 238 (57) 385 (92) 356 (85) 377 (90) 368...
a. Estimate the gas phase enthalpy change
using bond dissociation enthalpies from the OWL Table
Reference, not data from your text. Click the
References button and then click the
Tables link on the drop-down that appears. Include
algebraic sign and units.
b. Is the reaction exothermic or
endothermic?
c. Is the reaction likely to proceed
spontaneously in the direction written?
Use the References to access important values if needed for this question For the reaction below: Br OH -CH CHy-...
Problem #3 Calculate AH° for the following reaction using the bond energies found in Table 6.1 on page 228. Is this reaction spontaneous? (CH3)3C-H + 12 (CH3)3C-1 + HI TABLE 6.1 BOND DISSOCIATION ENERGIES (AH) OF COMMON BONDS KJ/MOL KCAL/MOL H2C=CH-CH3 HC-C-CH KJ/MOL KCAL/MOL 385 92 489117 KJ/MOL KCAL/MOL 444 106 335 80 285 Bonds to H. H-H H-CH3 H-CH2CH3 H-CH(CH3)2 H-C(CH3)3 (CH3)2CH-F (CH3)2CH-CI (CH3)2CH-Br (CH3)2CH- (CH3)2CH-OH 68 222 435 104 435 104 41098 39795 91 473 113 53 381...
a. Use strain energy increments in the OWL Table Reference (see References button, Strain Energy Increments) to calculate the energy difference between the two chair conformations of the compound below. b. Specify substituent positions axial or equatorial) in the more stable chair. c. Estimate the percent of the more stable chair at equilibrium at 25°C. (To determine the percent of the more stable chair at equilibrium, first calculate Keq, and then use this value to find the percentage.) A CH3...
a. Use strain energy increments in the OWL Table Reference (see References button, Strain Energy Increments) to calculate the energy difference between the two chair conformations of the compound below. b. Specify substituent positions (axial or equatorial) in the more stable chair. c. Estimate the percent of the more stable chair at equilibrium at 25°C. (To determine the percent of the more stable chair at equilibrium, first calculate Keq, and then use this value to find the percentage.) OH H3C...
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