6. For each of the following, determine whether the cis or trans isomer is more stable. You actually did this in the above question. LEt Et Et more stable? cis or trans? number of axial H-atoms: number of equatorial H-atoms:

5. Concepts Label the follow pairs of molecules as constitutional isomers, conformers, or stereoisomers CH3 CH3 CI CH3 CH3 H3C. CH3 CH3 Но H3C. H H3C. and and and CH3 H CH3 CH3 CI CH3 CH3 CH3 но CH3 CI What is the length of a C-C single bond

Do not give handwriting solution.

Explain why please

true or false O2-(g) is more stable than O-(g).

5. a-G a- Convert the following Newman projection into the bond line structural formula. Must use stereobonds to indicate the orientation of the groups. H3CO CN b- Draw the anti, gauche, and eclipsed conformations of the following molecule using Newman projection. H H H H c- i. Which cyclopropane molecule has the highest torsional strain? ii. Which cyclopropane molecule has the lowest torsional strain? C b a

In the box below give the Newman projection of the most stable conformer of the molecule shown below looking at the C2-C3 bond (in red). Place C2 in front. On the side list the energy strains that exist in that conformation. 3 CH3

Consider the conformers of 1-chloropropane, H3C CI H. H. CH3 H. CH3 .CI H3C H H3C H H. H. H. H H CI H. H. CI CI H. H. CAR TAR BAR FAR JAR 1. Which is the most stable confbrmer? Answer: 2. Which is the Gauche confomer? Answer: 3. Which conformer has the same energy with JAR. Answer: 4. Which conformer has a 0° dihedral angle between C-CH3 and C-CI bonds? Answer:

Draw the conformation for methoxycyclohexane with the methoxy group axial and the conformation with the methoxy group equatorial, include all hydrogen atoms on cyclohexane and label each as axial or equatorial. Using the values from Table 3.2, which conformation is more stable and by how much energy? Calculate the Keq for the equilibrium between axial and equatorial cyclohexane at 298 K. Calculate the percentage of each conformation present at this temperature.