(Solved): 3. Name the following molecules (a) (b) (c) 4. Draw the Newman projection formula for all conforma ...

3. Name the following molecules (a) (b) (c) 4. Draw the Newman projection formula for all conformations (draw only those two having different potential energy; you do not need to draw other conformers which are degenerate to one of these two different conformers) of ethane. (a) Classify them as either eclipsed or staggered conformers. (b) Rank all conformers in the increasing order of stability. 5. Draw the Newman projection formula for all conformations of propane. (a) Classify them as either eclipsed or staggered conformers. (b) Rank all conformers in the increasing order of stability. Indicate them as equivalent if they have equal potential energy/stability. 6. Draw the Newman projection formula for all conformations of butane. (a) Classify them as either eclipsed or staggered conformers. (b) Identify them as either anti or gauche conformers in case of staggered conformers. (c) Rank all conformers in the increasing order of stability. Indicate them as equivalent if they have equal potential energy/stability. 7. Draw the structural formula for all constitutional isomers of the following compounds with their IUPAC names. (a) \( \mathrm{C}_{5} \mathrm{H}_{12} \). (b) \( \mathrm{C}_{6} \mathrm{H}_{14} \) (c) \( \mathrm{C}_{7} \mathrm{H}_{16} \) 8. Draw chair 1 and chair 2 conformation of methylcyclohexanc. Explain why is one conformer more stable than other?