Electrophilic addition of HCl to cis-2-butene gave...

Name: Problem 87, Chapter 10: Chemistry
Uploaded: 2020-07-10T16:18:20-08:00
Duration: 3 min 14 s
Channel: Benjamin Angeles
Description: Electrophilic addition of HCl to cis-2-butene gave 2-chlorobutane, which was determined not to be optically active when examined with a polarimeter. Which of the following is the better explanation for the lack of optical activity in the 2 -chlorobutane formed in this reaction? (a) 2-Chlorobutane is not chiral. (b) Two enantiomers of 2 -chlorobutane were formed in equal amounts.

Electrophilic addition of HCl to cis-2-butene gave 2-chlorobutane, which was determined not to be optically active when examined with a polarimeter. Which of the following is the better explanation for the lack of optical activity in the 2 -chlorobutane formed in this reaction? (a) 2-Chlorobutane is not chiral. (b) Two enantiomers of 2 -chlorobutane were formed in equal amounts.

Electrophilic addition of HCl to cis-2-butene gave 2-chlorobutane, which was determined not to be optically active when examined with a polarimeter.
Which of the following is the better explanation for the lack of optical activity in the 2 -chlorobutane formed in this reaction?
(a) 2-Chlorobutane is not chiral.
(b) Two enantiomers of 2 -chlorobutane were formed in equal
amounts.

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Electrophilic Addition Reaction

This reaction involves the addition of an electrophile to a double bond, forming a more saturated product. In these reactions, the ? electrons of the alkene attack an electrophile, leading to the formation of intermediates that can be attacked from either side, often resulting in products with different stereochemical configurations.

Chirality and Optical Activity

Chirality refers to a molecule’s property of being non-superimposable on its mirror image, which results in the presence of enantiomers that can rotate plane-polarized light. Optical activity is the ability of chiral compounds to rotate this light, and the degree of rotation depends on the specific enantiomer and its concentration in a solution.

Racemic Mixture

A racemic mixture is an equimolar blend of two enantiomers, each of which rotates plane-polarized light in opposite directions. This equal mixture causes the optical rotations to cancel out, resulting in an overall lack of observed optical activity, even though the individual molecules are chiral.

Transcript

Please give Ace some feedback