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Topic: is potassium carbonate a weak base or strong base?  (Read 44227 times)

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Offline fooballer

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is potassium carbonate a weak base or strong base?
« on: March 30, 2008, 08:00:29 PM »
yeah, i need to konw this in order to answer a discussion question

thx
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Offline agrobert

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Re: is potassium carbonate a weak base or strong base?
« Reply #1 on: March 30, 2008, 08:05:58 PM »
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Offline Kyle1990

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Re: is potassium carbonate a weak base or strong base?
« Reply #2 on: March 31, 2008, 12:30:31 AM »
Consider this: Carbonic acid, H2CO3 is a weak acid. The conjugate base of a weak acid is a strong base. Thus the carbonate ion is a strong base. Since all group I compounds are soluble, potassium carbonate dissociates into K+ and CO32-ions, just like carbonic acid. (But technically carbonic acid is unstable and decomposes into water and carbon dioxide.)
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