Question

Exercise 1: Ethane (6 pts.) Heat of Formation of ethane: Bond Lengths: C-C C-H Bond Angle: C-C- H I S H-C-H Dihedral Angle: H-C-C-H What angles are ideal for this molecule? Do the results exactly match these ideal angles? If not, why not? Consider the sources of even small deviations from the ideal. What dihedral angle would you expect in the lowest energy conformation of ethane? Does this match your result? What is the term used to describe the shape of this conformer?

Answer 1

ethane # The standard heat of is – 2101 kcal. formations 1 2019/10/29 09 ac + 3H₂ 646 64 21.1kal Bond lenpon of - c-c- is 1.544 - (-4- is in Bond angles in eano is 109°28" because each carbon in ethane is spa hybrided. so Le-cu = LH-C-4 = 109 28" emaine Conform of emaine и и Jo=60 600 11 & # Eclipsed # least stane #Dihadral angle n-c-c-n zo Stagered. most stable dihadral angle 4-c-con=600