(a) Write Newman projections for the gauche and anti conformations of 1,2-dichloroethane (ClCH2CH2Cl).
(b) The measured dipole moment of ClCH2CH2Cl is 1.12 D. Which one of the following statements about 1,2-dichloroethane is false?
(1) It may exist entirely in the anti conformation.
(2) It may exist entirely in the gauche conformation.
(3) It may exist as a mixture of anti and gauche conformations.