Determining Conjugate Acid and Bases

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Jason Wu 1E
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Joined: Thu Jul 25, 2019 12:15 am

Determining Conjugate Acid and Bases

Postby Jason Wu 1E » Wed Nov 27, 2019 2:26 pm

What is the best way to determine in a reaction on which of the following elements are the acids, conjugate acids, bases, and conjugate bases? Is it possible to find out whether there are more than one of each type if there are more than two reactants/products (ie when the precipitation of a solid occurs)

Esha Chawla 2E
Posts: 108
Joined: Thu Jul 25, 2019 12:17 am

Re: Determining Conjugate Acid and Bases

Postby Esha Chawla 2E » Wed Nov 27, 2019 2:29 pm

Jason Wu 1A wrote:What is the best way to determine in a reaction on which of the following elements are the acids, conjugate acids, bases, and conjugate bases? Is it possible to find out whether there are more than one of each type if there are more than two reactants/products (ie when the precipitation of a solid occurs)


To determine if something is an acid or a base, refer to the Lewis and Bronsted definitions of acids and bases. According to the Bronsted definition, acids are H+ donors, while bases are H+ acceptors. On the other hand, the Lewis definition states that acids are electron pair acceptors, while bases are electron pair donors.

To figure out what the conjugate base is, look at the acid on the reactant side. The conjugate base is simply the product that "looks like" the acid but with one less H+. Similarly, to figure out what the conjugate acid is, look at the base on the reactant side. The conjugate acid is simply the product that "looks like" the base but with one more H+.

Kate Osborne 1H
Posts: 102
Joined: Fri Aug 30, 2019 12:16 am

Re: Determining Conjugate Acid and Bases

Postby Kate Osborne 1H » Wed Nov 27, 2019 3:44 pm

Acids and bases will be on the reactant side while their conjugate base/acid will be on the product side. You should be able to identify the acid/base by identifying which is the proton donor/acceptor.


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