Bronsted vs Lewis Acid/Base

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Siddiq 1E
Posts: 106
Joined: Fri Aug 09, 2019 12:15 am

Bronsted vs Lewis Acid/Base

Postby Siddiq 1E » Mon Nov 25, 2019 11:12 am

Hi, I'm a little confused about the difference between bronsted and lewis acid/bases. I know the definitions but I'm wondering practically is there a difference? Is one a more correct depiction of acids and bases than the other? Thanks in advance.

Paul Hage 2G
Posts: 105
Joined: Thu Jul 25, 2019 12:17 am

Re: Bronsted vs Lewis Acid/Base

Postby Paul Hage 2G » Mon Nov 25, 2019 11:15 am

I believe that they are just different ways to identify acids/bases. The two definitions just represent different properties of acids/bases.

Michael Nguyen 1E
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Joined: Sat Aug 17, 2019 12:17 am

Re: Bronsted vs Lewis Acid/Base

Postby Michael Nguyen 1E » Mon Nov 25, 2019 11:16 am

Bronsted and Lewis acids/bases are just two different ways to define acids/bases. Neither is more correct, and there is no difference in the actual compounds.
The Bronsted definition is based on the donation/reception of protons. The Lewis definition is based on the donation/reception of lone pairs of electrons.

Siddiq 1E
Posts: 106
Joined: Fri Aug 09, 2019 12:15 am

Re: Bronsted vs Lewis Acid/Base

Postby Siddiq 1E » Mon Nov 25, 2019 11:18 am

Thanks everyone. The other thing that's confusing to me is how does an atom donate a proton? I thought interactions between atoms were all through electrons.

sarahforman_Dis2I
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Joined: Sat Aug 17, 2019 12:18 am

Re: Bronsted vs Lewis Acid/Base

Postby sarahforman_Dis2I » Mon Nov 25, 2019 12:45 pm

S 1C wrote:Thanks everyone. The other thing that's confusing to me is how does an atom donate a proton? I thought interactions between atoms were all through electrons.


Maybe an example will help. Let's say that we have a reaction that is between hydrochloric acid and water.

HCl(aq) + H2O (l) --> H3O+ (aq) + Cl- (aq).

In this case, HCl is the acid because it is donating the proton (H+) to water. In other words, the proton (H+) is being transfered from HCl to H2O. I hope this helps.

Siddiq 1E
Posts: 106
Joined: Fri Aug 09, 2019 12:15 am

Re: Bronsted vs Lewis Acid/Base

Postby Siddiq 1E » Sun Dec 01, 2019 9:36 pm

Ahhh I understand now!! Thank you everyone :)


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