The carbonyl group was increased acidity compared with alkenes.   a. false b. true

Chemistry for Today: General, Organic, and Biochemistry
9th Edition
ISBN:9781305960060
Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Chapter15: Carboxylic Acids And Esters
Section: Chapter Questions
Problem 15.36E
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Question

The carbonyl group was increased acidity compared with alkenes.

 

a. false

b. true

Expert Solution
Step 1

Acidic character means compound has ability to donate proton easily.

Carbonyl group is classified as group having double bond between carbon and oxygen mainly, aldehyde or ketone.

General formula of aldehyde and ketone groups are RCHO and RCOR respectively.

R is any alkyl group.

Chemistry homework question answer, step 1, image 1

Alkene is the molecule having double bond.

Example: Ethene.

Chemistry homework question answer, step 1, image 2

Step 2

Acidic nature of carbonyl and alkene group.

Carbonyl groups are more acidic than alkene because its conjugate base forms resonating structure while in case of alkene not form.

If the stability of conjugate base is higher that means molecule is more acidic.

Higher the resonating structure of conjugate base higher will be the stability of conjugate base.

Chemistry homework question answer, step 2, image 1

Conjugate base of carbonyl group formed has more resonating structure than ethene therefore, it is more stable and more acidic than ethene.

 

 

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