Inversion of Stereochemistry and Reaction Mechanisms

Inversion of Stereochemistry and Reaction Mechanisms

Assessment

Interactive Video

Chemistry

11th - 12th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial reviews the mechanisms of SN2 and SN1 reactions, focusing on the inversion of stereochemistry at chiral centers. It explains how to identify inversion by comparing configurations and discusses the limitations of relying solely on R/S configurations. The tutorial provides detailed explanations of SN2 and SN1 mechanisms, including transition states, resonance forms, and carbocation stability. It also covers internal nucleophilic substitution and the role of acidic groups in reactions.

Read more

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main indication of inversion of stereochemistry in a chiral center?

Swap in positions of two substituents

Loss of a substituent

Change in R/S configuration

Formation of a new chiral center

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why might relying solely on R/S configuration be misleading in identifying inversion?

R/S configuration is always the same

R/S configuration never changes

R/S configuration changes with priority assignment

R/S configuration is irrelevant

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In an SN2 reaction, from which direction does the nucleophile attack?

From the front

From above

From the side

From the rear

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a key feature of the SN1 mechanism?

Direct nucleophilic attack

Formation of a stable carbocation

Simultaneous bond formation and breaking

No intermediate formation

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is resonance important in stabilizing carbocations in SN1 reactions?

It allows for multiple reaction pathways

It decreases the number of electrons

It increases the energy of the system

It delocalizes charge, increasing stability

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can nucleophiles attack a carbocation in an SN1 reaction?

Only from the top

From the side

From both top and bottom planes

Only from the bottom

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of the thio group in the reaction discussed in Section 3?

Forms a three-membered ring

Acts as a leaving group

Stabilizes the carbocation

Acts as a nucleophile

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Google

Continue with Google

Email

Continue with Email

Classlink

Continue with Classlink

Clever

Continue with Clever

or continue with

Microsoft

Microsoft

Apple

Apple

Others

Others

Already have an account?