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November 01, 2025, 01:05:46 pm

Author Topic: Implore01's Chemistry Question Thread  (Read 631 times)  Share 

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Implore01

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Implore01's Chemistry Question Thread
« on: September 17, 2013, 06:49:08 pm »
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Why is CaCO3 calcium carbonate considered a base? I did this a while ago, but I have forgotten already  :(  Isn't base a hydrogen acceptor according to the Bronsted Lowry Theory?

Alwin

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Re: Implore01's Chemistry Question Thread
« Reply #1 on: September 17, 2013, 06:54:16 pm »
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Why is CaCO3 calcium carbonate considered a base? I did this a while ago, but I have forgotten already  :(  Isn't base a hydrogen acceptor according to the Bronsted Lowry Theory?

HA is an acid and M2CO3 a metal carbonate:



Play spot the acid/conjugate base and base/conjugate acid to "prove" how it is a acid-base reaction... and a metal carbonate can act as a base
« Last Edit: September 17, 2013, 06:56:26 pm by Alwin »
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Implore01

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Re: Implore01's Chemistry Question Thread
« Reply #2 on: September 17, 2013, 06:57:48 pm »
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so it's an exception to the rule that bases are proton acceptors?

SocialRhubarb

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Re: Implore01's Chemistry Question Thread
« Reply #3 on: September 18, 2013, 05:12:06 pm »
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It still accepts protons.

You can kind of view it as the carbonate ion, , accepting 2 hydrogen ions to become , which is unstable so decomposes to form and .
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