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Canvas 4 → XCIO E • CH3-H 1, 3 diaxial interaction • H H eclipsed •...
→ XCIO DE • CH3-H 1,3 diaxial interaction • HH eclipsed • H-CH3 eclipsed • CH3...
→ XCIO DE • CH3-H 1,3 diaxial interaction • HH eclipsed • H-CH3 eclipsed • CH3 - CH3 eclipsed • CH3 - CH3 gauche 3.8 kJ/mol 4.0 kJ/mol 6.0 kJ/mol 11 kJ/mol 3.8 kJ/mol Question 11 8.33 pts The specific rotation of enantiomerically pure (+) sucrose is +66º. A particular mixture of () sucrose and sucrose exhibits a specific rotation of (+) 13°. What are the relative percentages of (+) and (-) sucrose in this sample? 80% (+) sucrose: 20%...
H H eclipsed H-CH3 eclipsed CH3 - CH3 eclipsed CH3 - CH3 gauche 3.0 kJ/mol 4.0...
H H eclipsed H-CH3 eclipsed CH3 - CH3 eclipsed CH3 - CH3 gauche 3.0 kJ/mol 4.0 kJ/mol 6.0 kJ/mol 11 kJ/mol 3.8 kJ/mol Question 12 8.33 pts (3R.45) 3,4-dimethylhexane is optically active and rotates plane-polarized light to the left. is optically inactive because it is racemic. is optically active and rotates plane-polarized light to the right. O is optically active, but its direction of rotation of plane-polarized light can only be determined by experiment. is optically inactive because it is...
M eclipsed • CH3 - CH3 eclipsed • CH3 CH3 gauche 6.0 kJ/mol 11 kJ/mol 3.8...
M eclipsed • CH3 - CH3 eclipsed • CH3 CH3 gauche 6.0 kJ/mol 11 kJ/mol 3.8 kJ/mol D Question 7 8.33 pts What is the relationship between the two structures shown? diastereomers different conformations of the same molecule O identical different compounds with different molecular formulas enantiomers Next • Previous
Consider the two compounds below. Which is expected to be more stable? • H H eclipsed...
Consider the two compounds below. Which is expected to
be more stable?
• H H eclipsed .H CH, eclipsed • CH3 CH3 eclipsed • CH3-CH3 gauche 4.0 kl/mol 6.0kJ/mol 11 kJ/mol 3.8 kJ/mol Question 4 Consider the two compounds below. Which is expected to be more stable? They are . Previous
Strain Energy Increments Strain Energy for Alkanes Interaction/Compound kJ/mol kcal/ 4.0 H: Heclipsing 1.0 H: CH3...
Strain Energy Increments Strain Energy for Alkanes Interaction/Compound kJ/mol kcal/ 4.0 H: Heclipsing 1.0 H: CH3 eclipsing 5.8 1.4 CH3 : CH3 eclipsing 11.0 2.6 gauche butane 3.8 0.9 cyclopropane 115 27.5 cyclobutane 110 26.3 cyclopentane 26.0 6.2 6.3 cycloheptane 26.2 cyclooctane 40.5 9.7 Axial Strain Energies for Monosubstituted Cyclohexanesab This table gives the sum of the values for the 1,3 diaxial interactions of the substituent with two hydrogen atoms. kJ/mol kcal/mol Substituent(solvent) -CH3 1.7 7.3 CH2CH3 7.5 1.8 -CH(CH3)2...
Strain Energy Increments Strain Energy for Alkanes Interaction / Compound kJ/mol kcal/mol H: Heclipsing 4.0 1.0 H: CH3...
Strain Energy Increments Strain Energy for Alkanes Interaction / Compound kJ/mol kcal/mol H: Heclipsing 4.0 1.0 H: CH3 eclipsing 5.8 1.4 CH3 : CHз eclipsing 11.0 2.6 gauche butane 3.8 0.9 cyclopropane 27.5 115 cyclobutane 110 26.3 cyclopentane 26.0 6.2 cycloheptane 26.2 6.3 cyclooctane 40.5 9.7 Ln Axial Strain Energies for Monosubstituted Cyclohexanesa,b This table gives the sum of the values for the 1,3 diaxial interactions of the substituent with two hydrogen atoms. Substituent(solvent) К/mol kcal/mol -CНз 7,3 1,7 -CH-CHз...
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...
Question 3 of 4 (1 point) 2.3 Section Exercise 19 The following table presents amounts of...
Question 3 of 4 (1 point) 2.3 Section Exercise 19 The following table presents amounts of particulate emissions for 50 vehicles. Construct a split stem-and-leaf plot in which each stem appears twice, once for leaves 0-4 and again for leaves Chec 5-9. Use the digits 0, 1, 2,3, 4, 5, and 6 as the stems. For each stem, arrange its leaves in increasing order. Do not separate the answers with comma. If there are no leaves, enter "N". Guide 6.6...
2. List the expected spectral data of 2-ethyl-3-hydroxy-hexanal observed from an IR, a 'H-NMR and mass...
2. List the expected spectral data of 2-ethyl-3-hydroxy-hexanal observed from an IR, a 'H-NMR and mass spectrum. CH3 -CH2 CH C-Hal C-N C-o CEC Intensity CEN Aromatic C=C C=0 220 200 180 160 140 120 60 40 20 0 ppm 100 80 Chemical shift (8) Intensity Bonding C-H Type of Vibration (Stretching unless noted) alkane CH -CH, alkene w-m m w-m bending bending out-of-plane bending alkyne arene Frequency (cm) 2850-3000 1375 and 1450 1450-1475 3000-3100 650-1000 3300 3030 690-900 2720...
→ XCIO DE • CH3-H 1,3 diaxial interaction • HH eclipsed • H-CH3 eclipsed • CH3 - CH3 eclipsed • CH3 - CH3 gauche 3.8 kJ/mol 4.0 kJ/mol 6.0 kJ/mol 11 kJ/mol 3.8 kJ/mol Question 11 8.33 pts The specific rotation of enantiomerically pure (+) sucrose is +66º. A particular mixture of () sucrose and sucrose exhibits a specific rotation of (+) 13°. What are the relative percentages of (+) and (-) sucrose in this sample? 80% (+) sucrose: 20%...
H H eclipsed H-CH3 eclipsed CH3 - CH3 eclipsed CH3 - CH3 gauche 3.0 kJ/mol 4.0 kJ/mol 6.0 kJ/mol 11 kJ/mol 3.8 kJ/mol Question 12 8.33 pts (3R.45) 3,4-dimethylhexane is optically active and rotates plane-polarized light to the left. is optically inactive because it is racemic. is optically active and rotates plane-polarized light to the right. O is optically active, but its direction of rotation of plane-polarized light can only be determined by experiment. is optically inactive because it is...
M eclipsed • CH3 - CH3 eclipsed • CH3 CH3 gauche 6.0 kJ/mol 11 kJ/mol 3.8 kJ/mol D Question 7 8.33 pts What is the relationship between the two structures shown? diastereomers different conformations of the same molecule O identical different compounds with different molecular formulas enantiomers Next • Previous
Consider the two compounds below. Which is expected to
be more stable?
• H H eclipsed .H CH, eclipsed • CH3 CH3 eclipsed • CH3-CH3 gauche 4.0 kl/mol 6.0kJ/mol 11 kJ/mol 3.8 kJ/mol Question 4 Consider the two compounds below. Which is expected to be more stable? They are . Previous
Strain Energy Increments Strain Energy for Alkanes Interaction/Compound kJ/mol kcal/ 4.0 H: Heclipsing 1.0 H: CH3 eclipsing 5.8 1.4 CH3 : CH3 eclipsing 11.0 2.6 gauche butane 3.8 0.9 cyclopropane 115 27.5 cyclobutane 110 26.3 cyclopentane 26.0 6.2 6.3 cycloheptane 26.2 cyclooctane 40.5 9.7 Axial Strain Energies for Monosubstituted Cyclohexanesab This table gives the sum of the values for the 1,3 diaxial interactions of the substituent with two hydrogen atoms. kJ/mol kcal/mol Substituent(solvent) -CH3 1.7 7.3 CH2CH3 7.5 1.8 -CH(CH3)2...
Strain Energy Increments Strain Energy for Alkanes Interaction / Compound kJ/mol kcal/mol H: Heclipsing 4.0 1.0 H: CH3 eclipsing 5.8 1.4 CH3 : CHз eclipsing 11.0 2.6 gauche butane 3.8 0.9 cyclopropane 27.5 115 cyclobutane 110 26.3 cyclopentane 26.0 6.2 cycloheptane 26.2 6.3 cyclooctane 40.5 9.7 Ln Axial Strain Energies for Monosubstituted Cyclohexanesa,b This table gives the sum of the values for the 1,3 diaxial interactions of the substituent with two hydrogen atoms. Substituent(solvent) К/mol kcal/mol -CНз 7,3 1,7 -CH-CHз...
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...
Question 3 of 4 (1 point) 2.3 Section Exercise 19 The following table presents amounts of particulate emissions for 50 vehicles. Construct a split stem-and-leaf plot in which each stem appears twice, once for leaves 0-4 and again for leaves Chec 5-9. Use the digits 0, 1, 2,3, 4, 5, and 6 as the stems. For each stem, arrange its leaves in increasing order. Do not separate the answers with comma. If there are no leaves, enter "N". Guide 6.6...
2. List the expected spectral data of 2-ethyl-3-hydroxy-hexanal observed from an IR, a 'H-NMR and mass spectrum. CH3 -CH2 CH C-Hal C-N C-o CEC Intensity CEN Aromatic C=C C=0 220 200 180 160 140 120 60 40 20 0 ppm 100 80 Chemical shift (8) Intensity Bonding C-H Type of Vibration (Stretching unless noted) alkane CH -CH, alkene w-m m w-m bending bending out-of-plane bending alkyne arene Frequency (cm) 2850-3000 1375 and 1450 1450-1475 3000-3100 650-1000 3300 3030 690-900 2720...
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