Difference between Arrhenius, Bronsted, and Lewis

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Tiffany Dong_4e
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Difference between Arrhenius, Bronsted, and Lewis

Postby Tiffany Dong_4e » Sat Nov 30, 2019 12:35 am

What are the differences between Arrhenius, Bronsted, and Lewis acids and bases?

Deepika Reddy 1A
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Re: Difference between Arrhenius, Bronsted, and Lewis

Postby Deepika Reddy 1A » Sat Nov 30, 2019 2:40 am

A Lewis Acid is one that accept an electron pair while a Lewis base is one that can donate an electron pair. A Bronsted acid is one that donates protons while a Bronsted base is one that accepts protons. Finally, an Arrhenius acid is a substance that dissolves to increase the number of protons in water while an Arrhenius base forms hydroxide ions in water.

Melvin Reputana 1L
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Re: Difference between Arrhenius, Bronsted, and Lewis

Postby Melvin Reputana 1L » Sat Nov 30, 2019 11:01 pm

It also good to note that the Bronsted-lowry definition of an acid/base accounts for how acids/bases can be dissolved in solvents other than water such as ammonia. The Arrhenius definition involves H+ and OH- ions which occur due to the acid/base being dissolved in water.

KaitlynBali_4B
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Re: Difference between Arrhenius, Bronsted, and Lewis

Postby KaitlynBali_4B » Sun Dec 01, 2019 12:12 am

I also found Figure 6A.6 in the book on page 448 to be extremely helpful. One thing that I found important was that an Arrhenius acid or base is a compound that supplies the H+ or OH-, not the H+ or OH- itself. However, the definition of a Lewis acid would define an H+ by itself as an acid because it is an electron acceptor.

Haley Pham 4I
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Re: Difference between Arrhenius, Bronsted, and Lewis

Postby Haley Pham 4I » Sun Dec 01, 2019 1:26 am

An Arrhenius acid is a molecule that donates an H+ ion when dissolved in water, so it is a proton donor. An Arrhenius base is a molecule that yields an OH- ion when dissolved in water. Bronsted-Lowry acids are proton donors, and Bronsted-Lowry bases are proton acceptors. Lewis acids are electron pair acceptors, and Lewis bases are electron pair donors.

Nikki Razal 1L
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Re: Difference between Arrhenius, Bronsted, and Lewis

Postby Nikki Razal 1L » Sun Dec 01, 2019 3:11 am

An arrhenius:
- acid: gives off H+
- base: gives off OH-

Bronsted-Lowry
- acid: is a proton donor
- base: is a proton acceptor

Lewis
- acid: is an electron acceptor
-base: is an electron donor


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