When is an acid considered Bronsted?

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Darren Nguyen 1F
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When is an acid considered Bronsted?

Postby Darren Nguyen 1F » Sun Nov 24, 2019 9:50 pm

What makes them different

alex_4l
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Joined: Thu Sep 26, 2019 12:18 am

Re: When is an acid considered Bronsted?

Postby alex_4l » Sun Nov 24, 2019 9:52 pm

Bronstead acids is when the acid is a proton donor and a Lewis acid is an acid that accepts the electron pair

Maya Pakulski 1D
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Re: When is an acid considered Bronsted?

Postby Maya Pakulski 1D » Mon Nov 25, 2019 1:41 pm

Why are there there two definitions for acids and bases? Why not just one?

Mitchell Koss 4G
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Re: When is an acid considered Bronsted?

Postby Mitchell Koss 4G » Mon Nov 25, 2019 8:45 pm

Bronstead vs Lewis is really the same concept, the difference is the level of detail each gives, with Lewis focusing on the electrons, and Bronstead focusing on the general shift.

Jainam Shah 4I
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Re: When is an acid considered Bronsted?

Postby Jainam Shah 4I » Mon Nov 25, 2019 9:10 pm

Any molecule that donates hydrogen ions or protons to another molecule can act as a Bronsted acid.

Venus_Hagan 2L
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Re: When is an acid considered Bronsted?

Postby Venus_Hagan 2L » Mon Nov 25, 2019 11:43 pm

Maya Pakulski 3D wrote:Why are there there two definitions for acids and bases? Why not just one?

the two definitions focus on different things. Bronstead focuses on the transfer of protons or H+ ions and Lewis focuses on electrons

Lindsey Chheng 1E
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Re: When is an acid considered Bronsted?

Postby Lindsey Chheng 1E » Mon Nov 25, 2019 11:52 pm

Darren Nguyen 1F wrote:What makes them different

The Bronsted-Lowry definition of acids and bases are focused on the proton (H+). Bronsted Acids are proton (H+) donors and Bronsted Bases are the proton (H+) acceptors. My high school chemistry teacher used the phrase "shake and take", where acids "shake" off an H+ and bases "take" an H+.

The Lewis Definition of acids and bases focuses on the lone pairs, where Lewis acids are the lone pair acceptor and Lewis bases are the lone pair donor.

The end result of which compound is an acid and which is the base is still the same, it's just whether you are using the transfer of lone pairs or protons to figure it out.

Nyari Muchaka_Discussion 4A
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Re: When is an acid considered Bronsted?

Postby Nyari Muchaka_Discussion 4A » Tue Nov 26, 2019 12:08 am

Bronsted has to do with protons(more protons means more acidic). A Bronsted acid is a proton donor(HCl donates H+) and the Bronsted base is a proton acceptor. Lewis has to do with electrons, a Lewis acid is an electron acceptor and a Lewis base is an electron donor. All Bronsted acids are Lewis acids but not all Lewis acids are Bronsted acids as HCl dissociates in water it will donate its proton, and the lone pairs on the chlorine will donate electrons(lewis and Bronsted acid), but some electron donors such as a chlorine on its own will not donate a proton as they do not have one thus it is just a Lewis acid and not a Bronsted acid.

rohun2H
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Re: When is an acid considered Bronsted?

Postby rohun2H » Tue Nov 26, 2019 9:35 am

There simply exist two common ways of defining an acid (or a base). Both the Bronsted definition and Lewis definition refer to the same thing yet identify it in different ways.

Katherine Chhen 3I
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Joined: Fri Sep 28, 2018 12:15 am

Re: When is an acid considered Bronsted?

Postby Katherine Chhen 3I » Thu Nov 28, 2019 10:10 am

How would we be able to tell which is a Bronsted or Lewis acid/base?


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