Question

Part A Calculate the amount of steric strain in H CH3 СН3 Express your answer using two significant figures. V AC mo ? a total strain energy = kcal/mol Submit Request Answer

Answer 1

In this form two butane-garche actions are present. CH3 H z en interactions are so total Strain energy = (2x0 9) = 1.8 kcal. mat- H interaction energy = 0.g kelu (one -CH₂ energy = og keul/mol - Y H2 N H CH In this form two butane-gauche interaction (H/CH3) and one -CH₂1-CH₂ Syn diaxial interaction it are present. So here total Andreaction ne mengy = (2x0:0) + (1x 3.6) = 5.4 kcal/mol energy = 0.9 kcal/mal and Lone-CH3/H interaction one -CH₃ /-CH2 interaction enge energy = 3.6 kcal/mal O Here comp conformation one that is h et would more predominate at equilibrium. As here we can see that (from above calculation) the strain energy is more for other compound as compair • CHg this one. So it will be more CH₂ stable as compain to other CH₃ HH CH