Chapter 4 CHM132

Chapter 4 CHM132

University

10 Qs

quiz-placeholder

Similar activities

Biochemistry - Organic Chemistry-2

Biochemistry - Organic Chemistry-2

University

13 Qs

Acid and bases

Acid and bases

University

10 Qs

Nomenclature Caronyl

Nomenclature Caronyl

University

10 Qs

Principles of Organic Chemistry- II

Principles of Organic Chemistry- II

University

10 Qs

Identifying Acids and Bases

Identifying Acids and Bases

9th Grade - University

15 Qs

FTIR SPECTROSCOPY

FTIR SPECTROSCOPY

University

15 Qs

Exam buster module 1

Exam buster module 1

University

15 Qs

iGCSE Alcohols

iGCSE Alcohols

11th Grade - University

10 Qs

Chapter 4 CHM132

Chapter 4 CHM132

Assessment

Quiz

Chemistry

University

Medium

Created by

DR NOR WAHIDA

Used 2+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the general mechanism of nucleophilic acyl substitution?

One-step SN1-type mechanism

Two-step: nucleophilic attack followed by leaving group departure

Acid–base neutralization

Rearrangement reaction

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is the best leaving group among carboxylic acid derivatives?

NH₂⁻

OH⁻

OR⁻

Cl⁻

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Arrange the following leaving groups from poorest to best in nucleophilic acyl substitution:

OH⁻ < NH₂⁻ < RCOO⁻ < OR⁻ < Cl⁻

NH₂⁻ < OH⁻ < OR⁻ < RCOO⁻ < Cl⁻

Cl⁻ < RCOO⁻ < OR⁻ < OH⁻ < NH₂⁻

RCOO⁻ < Cl⁻ < OH⁻ < NH₂⁻ < OR⁻

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is a carboxylic acid (R–COOH) less reactive than an acid chloride (R–COCl)?

Cl⁻ is more electronegative than OH⁻

OH⁻ is a weaker acid

OH⁻ is a poor leaving group compared to Cl⁻

Carboxylic acids do not contain a carbonyl group

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the product when an ester reacts with ammonia (NH₃)?

Carboxylic acid

Amide

Ketone

Aldehyde

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why are amides generally the least reactive among carboxylic acid derivatives?

Amides do not contain a leaving group

The carbonyl group in amides is unstable

NH₂⁻ is a poor leaving group due to its strong basicity

Amides are charged species and unreactive in water

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the product of this hydrolysis reaction: R–COCl + H₂O → ?

R–CH₃

R–COOH

R–OH

R–COOR

Create a free account and access millions of resources

Create resources
Host any resource
Get auto-graded reports
or continue with
Microsoft
Apple
Others
By signing up, you agree to our Terms of Service & Privacy Policy
Already have an account?