Identify chiral and achiral molecules in each of the following pair of compounds. (Wedge and Dash representations).
(I) (i) (ii)
(II) (i) (ii)
(III) (i) (ii) CH₃CH₂CH₂CH₂Br

Question

Identify chiral and achiral molecules in each of the following pair of compounds. (Wedge and Dash representations). (I) (i) (ii) (II) (i) (ii) (III) (i) (ii) CH 3 CH 2 CH 2 CH 2 Br

TestHub · Accepted Answer

Ans. (A) (I) (i) chiral, (ii) achiral; (II) (i) chiral, (ii) achiral; (III) (i) chiral, (ii) achiral.

Sol. (I) (i) The carbon bears four different groups (H, OH, Br, CH₃) : chiral. (ii) Two identical Br atoms on the same carbon : achiral.

(II) (i) Pentan-2-ol: the carbinol carbon bears H, OH, CH₃ and n-propyl : chiral. (ii) Pentan-3-ol: two identical ethyl groups on the carbinol carbon : achiral.

(III) (i) 2-Bromobutane: the C-2 bears H, Br, CH₃ and C₂H₅ : chiral. (ii) 1-Bromobutane has no stereocentre : achiral.

Chemistry - STEREO ISOMERISM Question with Solution | TestHub

Options:

Doubts & Discussion