The conjugate acids of four different amines have the following values: •…

CHEMISTRY · Single correct · A Level · Chemistry · Amines · Amines

Problem

The conjugate acids of four different amines have the following pKapK_a values: • ethylammonium ion, pKa=10.8pK_a = 10.8 • isopropylammonium ion, pKa=11.2pK_a = 11.2 • anilinium ion, pKa=4.6pK_a = 4.6 • pyridinium ion, pKa=5.2pK_a = 5.2 Which parent amine is the strongest base under standard aqueous conditions? (a) ethylamine (CH3_3CH2_2NH2_2) (b) aniline (C6_6H5_5NH2_2) (c) isopropylamine ((CH3_3)2_2CHNH2_2) (d) pyridine (C5_5H5_5N)

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