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Question

Chemistry Question on Hydrocarbons

In the following skew conformation of ethane, HCCHH'-C-C-H'' dihedral angle is :

A

120120^{\circ}

B

5858^{\circ}

C

149149^{\circ}

D

151151^{\circ}

Answer

149149^{\circ}

Explanation

Solution

HCCH"H'-C-C-H"
Hence angle between H?CCHH'?C-C-H'' is
(120+29)=149(120^{\circ} + 29^{\circ}) = 149^{\circ}