Table D.2 Dissociation Constants for Bases at 25 °C Name Formula Kb Ammonia NH, 1.8 x 10-5 Methylamine CH,NH, 4.4 x 104 Ethylamine C,HẠNH, 6.4 X 104 Dimethylamine (CH,),NH 5.4 x 10 Trimethylamine (CH3),N 6.4 x 10-5 Which of the following are true from the table of base dissociation constants?

Introductory Chemistry: A Foundation
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Chapter16: Acids And Bases
Section: Chapter Questions
Problem 13QAP
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Table D.2 Dissociation Constants for Bases at 25 °C
Name
Kb
Ammonia
1.8 x 10-5
Formula
NH,
CH,NH,
C,HẠNH,
(CH,),NH
(CH₂),N
Which of the following are true from the table of base dissociation constants?
Methylamine
Ethylamine
Dimethylamine
Trimethylamine
4.4 x 104
6.4 × 10
5.4 x 10
6.4 x 10-5
Transcribed Image Text:Table D.2 Dissociation Constants for Bases at 25 °C Name Kb Ammonia 1.8 x 10-5 Formula NH, CH,NH, C,HẠNH, (CH,),NH (CH₂),N Which of the following are true from the table of base dissociation constants? Methylamine Ethylamine Dimethylamine Trimethylamine 4.4 x 104 6.4 × 10 5.4 x 10 6.4 x 10-5
The smaller the Kb the more available the lone pair of nitrogen.
The larger the Kb the more available the lone pair of nitrogen.
Electron-donating groups make the lone pair of nitrogen less available for donation..
Electron-donating groups make the lone pair of nitrogen more available for donation.
The more electron-donating groups the more basic is the amine.
Steric factors do not affect the basicity of the amine.
The availability of the lone pair of nitrogen is decreased by steric factors.
Transcribed Image Text:The smaller the Kb the more available the lone pair of nitrogen. The larger the Kb the more available the lone pair of nitrogen. Electron-donating groups make the lone pair of nitrogen less available for donation.. Electron-donating groups make the lone pair of nitrogen more available for donation. The more electron-donating groups the more basic is the amine. Steric factors do not affect the basicity of the amine. The availability of the lone pair of nitrogen is decreased by steric factors.
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