bronsted base and acid

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Annie Ye
Posts: 106
Joined: Wed Sep 18, 2019 12:22 am

bronsted base and acid

Postby Annie Ye » Fri Dec 06, 2019 7:24 pm

How do I know if something is a Bronsted base or acid? How do they compare to Lewis base and acids?

JonathanS 1H
Posts: 60
Joined: Thu Jul 11, 2019 12:17 am

Re: bronsted base and acid

Postby JonathanS 1H » Fri Dec 06, 2019 7:46 pm

Something is a Bronsted acid if it gives off a proton to water in solution. A bronsted base removes a proton from water in solution. A lewis acid accepts an electron pair, while a lewis base donates an electron pair.

Sjeffrey_1C
Posts: 58
Joined: Wed Feb 20, 2019 12:17 am

Re: bronsted base and acid

Postby Sjeffrey_1C » Fri Dec 06, 2019 8:48 pm

Lewis refers to eLectrons. Bronstead refers to protons.

Bronstead acids or bases are always a Lewis acid or base (respectively). Aka a bronstead base is also a lewis base.

But the vice-versa is not true. Ex. BF3 is a lewis acid (it accepts electrons) but is not a bronstead acid (doesn't have protons to donate).

Salma Fawzi 4G
Posts: 50
Joined: Wed Sep 18, 2019 12:20 am

Re: bronsted base and acid

Postby Salma Fawzi 4G » Sat Dec 07, 2019 9:54 am

Bronsted acid is a proton donor and a Bronsted base is a proton acceptor.
While a Lewis acid is an electron pair acceptor and a Lewis base is an electron pair donor.

Abigail_Hagen2G
Posts: 62
Joined: Fri Aug 09, 2019 12:17 am

Re: bronsted base and acid

Postby Abigail_Hagen2G » Sat Dec 07, 2019 10:40 pm

So, the lewis definition is concerned with electrons while the Bronsted definition is involving protons.


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