How to identify a Bronsted acid or base

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Alexander Hari 1L
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How to identify a Bronsted acid or base

Postby Alexander Hari 1L » Mon Jun 04, 2018 8:19 pm

Can anyone offer some tips/examples on how to identify if a molecule is an acid or a base specifically Bronsted protons?

OrAmar-1L
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Postby OrAmar-1L » Mon Jun 04, 2018 8:41 pm

Atoms that donate protons are acids, and atoms that accept protons are bases. Hope this helps!

Cameron Smith 1I
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Re: How to identify a Bronsted acid or base

Postby Cameron Smith 1I » Mon Jun 04, 2018 11:18 pm

What exactly does the term Bronsted imply?

Jade Corpus-Sapida 1G
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Re: How to identify a Bronsted acid or base

Postby Jade Corpus-Sapida 1G » Tue Jun 05, 2018 3:51 pm

I would imagine from our lecture notes, that Bronsted refers to protons either being donated (acid) or accepted (base). While lewis refers to electrons.

Luis Avalos 1D
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Re: How to identify a Bronsted acid or base

Postby Luis Avalos 1D » Tue Jun 05, 2018 6:03 pm

Bronsted acids donate protons (H+) while bronsted bases accept protons.

Andre-1H
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Re: How to identify a Bronsted acid or base

Postby Andre-1H » Tue Jun 05, 2018 8:18 pm

Jade Corpus-Sapida 1G wrote:I would imagine from our lecture notes, that Bronsted refers to protons either being donated (acid) or accepted (base). While lewis refers to electrons.


I think bronsted comes from the name of the guy who came up with the idea. kind of like schrodinger's equation. I could be mistaken though

Sarah Brecher 1I
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Re: How to identify a Bronsted acid or base

Postby Sarah Brecher 1I » Wed Jun 06, 2018 10:44 pm

How can you tell if it is a Bronsted acid or base without the reaction though? For example, on J1, you are asked to identify if it is a Bronsted acid or base just by the compound. How would you do this?

Harmonie Ahuna-1C
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Re: How to identify a Bronsted acid or base

Postby Harmonie Ahuna-1C » Thu Jun 07, 2018 12:29 am

Sarah Brecher 1I wrote:How can you tell if it is a Bronsted acid or base without the reaction though? For example, on J1, you are asked to identify if it is a Bronsted acid or base just by the compound. How would you do this?


I'm also confused on how to do this. How can we tell whether or not a hydrogen has been donated or accepted with just the compound name? Will we be expected to do this on the final?

Jordanmarshall
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Re: How to identify a Bronsted acid or base

Postby Jordanmarshall » Sun Jun 10, 2018 12:32 pm

so what is the difference between Bronsted acid and bases vs lewis acids and bases?

Jocelyn Fermin1J
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Re: How to identify a Bronsted acid or base

Postby Jocelyn Fermin1J » Sun Jun 10, 2018 3:12 pm

I believe we will have to identify the Bronsted acid/base and Lewis acid/base in reactions, but not through their name. For J1 you can create your own reaction since they are in a solution of water.
ex
HNO3 + H20 -> NO3^- + H30^+
acid base conjugate base conjugate acid

Therefore, HNO3 is a Bronsted acid.
can't be Bronsted base because

HNO3 + H20 -> H2N03^+ + OH^-
base acid conjugate acid conjugate base

Jocelyn Fermin1J
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Re: How to identify a Bronsted acid or base

Postby Jocelyn Fermin1J » Sun Jun 10, 2018 3:27 pm

Jordanmarshall wrote:so what is the difference between Bronsted acid and bases vs Lewis acids and bases?


this website helped me out a bit:

http://leah4sci.com/arrhenius-bronsted- ... chemistry/

hope it will too!

Chem_Mod
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Re: How to identify a Bronsted acid or base

Postby Chem_Mod » Sun Jun 10, 2018 6:00 pm

Bronsted acids/bases are proton donors/acceptors.
Lewis acids/bases are electron acceptors/donors.

Bronsted and Lewis are scientists who proposed these ways of classifying acid/bases.


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