Locate any planes of symmetry in each of the following compounds. Which of the compounds a...

Locate any planes of symmetry in each of the following compounds. Which of the compounds are chiral? Which are achiral?

(a) (E)-1,2-Dichloroethene

(b) (Z)-1,2-Dichloroethene

(c) cis-1,2-Dichlorocyclopropane

(d) trans-1,2-Dichlorocyclopropane

Sample Solution (a) (E)-1,2-Dichloroethene is planar. The molecular plane is a plane of symmetry. Identifying a plane of symmetry tells us the molecule is achiral.