Which of the two molecules would have a lesser preference to be in the shown conformation and why?
Which of the two molecules would have a lesser preference to be in the shown conformation...
which are more stable? CH3 Cite CH3 CH Conformation 2 for isomer A (A2) Conformation 1 for isomer A (A1) Question 3: Which conformation is more stable for isomer A? Why? 3. Draw two different chair conformations for model isomer B CAB CH3 CAB Chs Conformation 2 for isomer B (B2) Conformation 1 for isomer B (B1) Question 4: Which conformation is more stable for isomer B? Why?
Which of the molecules shown below can have a meso stereoisomer? Which of the molecules shown below can have a meso stereoisomer? A) only A B) only B C) only C D) only A and B E) only A and C F) only B and C G) A, B and C
Problem #10. One chair conformation is shown for each compound. a) Complete the structure of the other chair conformation after the chair flip), and complete the wedge- and-dash drawing. Other Conformation Wedge-and-Dash Drawing CH3 нTM CH3CH2 CH3 CH3 CH3 b) For each compound, the wedge-and-dash drawing corresponds to which chair conformation? Explain. c) Which of these compounds are chiral? Which are achiral? How do you know?
At which of the following temperatures would molecules have 2.5 times the average kinetic energy they have at room temperature, 20 oC?
- Which conformation(s) of the two isomers A & B shown below is/are the most stal A B Me Me a) A, with the methyl group axial b) A, with the methyl group equatorial c) B, with the methyl group axial d) B, with the methyl group equatorial e) The conformations described in (a) and (b) are equally the most stable
Which is more viscous and why? 4. (After Mon/Tues class) Both molecules shown below are octane isomers. Which one has the highest boiling point? Which one is more viscous? Which one would tend to bead more on a surface? Explain each part. C& Hig Co His H H H H H H H H CH3 CH3 marc polariza CH3-C-CH2-CH H-C-CC-CC-C-C-CH a) CH3 CH3 b) H H H H H
Suppose that two conformations A and B of a molecule differ in energy by 5.0 kJ/ mol, and a third conformation lies 0.50 kJ/mol above B. What proportion of molecules will be in conformation B at 273 K, with each conformation treated as a single energy level?
Which conformation(s) of the two isomers A & B shown below is/are the most stable: А B Me Me (a) A, with the methyl group axial (b) A, with the methyl group equatorial (c) B, with the methyl group axial (d) B, with the methyl group equatorial (e) The conformations described in (a) and (b) are equally the most stable
15. Which conformation(s) of the two isomers A & B shown below is/are the most stable: B Me Me (a) A, with the methyl group axial (b) A, with the methyl group equatorial (c) B, with the methyl group axial (d) B, with the methyl group equatorial (e) The conformations described in (a) and (b) are equally the most stable
1. For each of these molecules, draw both chair conformations. Include all the hydrogens on the ring. Circle the more stable chair conformation of each molecule. CH3 .?? H3C CH3 H3C CH3 2. Which of these two molecules is more stable, A or B? Circle your answer, and support your decision by drawing all relevant chairs.