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Topic: Weak acid and strong alkali  (Read 3948 times)

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Offline cliverlong

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Weak acid and strong alkali
« on: March 04, 2009, 06:32:48 AM »
Why does solution made by combining a weak acid (such as ethanoic acid) with a strong alkali (such as sodium hydroxide) produce a solution (sodium ethanoate) with with an alkali pH?

Thanks

Clive
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Offline Astrokel

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Re: Weak acid and strong alkali
« Reply #1 on: March 04, 2009, 06:36:36 AM »
Hey Clive, it is salt hydrolysis.
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Offline cliverlong

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Re: Weak acid and strong alkali
« Reply #2 on: March 04, 2009, 07:23:05 AM »
Quote from: Astrokel on March 04, 2009, 06:36:36 AM
Hey Clive, it is salt hydrolysis.
I don't understand what is happening at an ionic level which will lead to an excess of [OH-] over [H+] resulting in the alkaline pH.

Clive
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Offline Borek

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Re: Weak acid and strong alkali
« Reply #3 on: March 04, 2009, 01:40:34 PM »
Acetate- + H2O  ::equil:: HAcetate + OH-
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