Ionization Constants of Weak Bases, Front matter | Chemistry 2e

Learning objectives

Ionization Constants of Weak Bases
Base	Lewis Structure	K_b at 25 °C
ammonia	View original figure (external; image not reproduced in this text edition) Original figure description: The Lewis structure of an ammonia molecule (NH3), showing a central nitrogen atom bonded to three hydrogen atoms and a lone pair of electrons on the nitrogen.	1.8 $\times$ 10⁻⁵
dimethylamine	View original figure (external; image not reproduced in this text edition) Original figure description: The structural formula of dimethylamine, (CH3)2NH, a secondary amine. It features a central nitrogen atom bonded to two methyl groups and one hydrogen, along with a lone pair.	5.9 $\times$ 10⁻⁴
methylamine	View original figure (external; image not reproduced in this text edition) Original figure description: A Lewis structure diagram of methylamine, showing a carbon atom bonded to three hydrogen atoms and a nitrogen atom. The nitrogen atom is bonded to two hydrogen atoms and has one lone pair of electrons.	4.4 $\times$ 10⁻⁴
phenylamine (aniline)	View original figure (external; image not reproduced in this text edition) Original figure description: The molecular structure of aniline (C6H5NH2), an aromatic organic compound featuring a benzene ring with an amino (-NH2) group attached.	4.3 $\times$ 10⁻¹⁰
trimethylamine	View original figure (external; image not reproduced in this text edition) Original figure description: The chemical structure of trimethylamine, featuring a central nitrogen atom bonded to three methyl groups and a lone pair of electrons.	6.3 $\times$ 10⁻⁵

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