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Topic: pKa value confuse...  (Read 3320 times)

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Offline pesona3f

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pKa value confuse...
« on: April 21, 2009, 03:21:29 AM »
is NH4+ and NR4+ more basic than( higher pKa ) than alkyl amine, arylamine and heterocycle amine such as imidazole??
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Offline aldoxime_amine

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Re: pKa value confuse...
« Reply #1 on: April 21, 2009, 06:48:49 AM »
NR4+ is not basic.
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Offline lancenti

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Re: pKa value confuse...
« Reply #2 on: April 21, 2009, 09:14:41 AM »
While aldoxime_amine is right in that we don't usually consider NH4+ as a base, since it comes from a weak base we consider it a strong conjugate acid and therefore a very weak base if you really want to push it.
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Offline pesona3f

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Re: pKa value confuse...
« Reply #3 on: April 21, 2009, 09:16:55 AM »
that answer my question.... really appreciate it. And is pka for tertiary alkylamine is higher than tertiary alkylamine??
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