Different from Bronsted and Conjugate

Moderators: Chem_Mod, Chem_Admin

904571591
Posts: 19
Joined: Fri Sep 25, 2015 3:00 am

Different from Bronsted and Conjugate

Postby 904571591 » Sun Jul 30, 2017 8:42 pm

What is the different from Bronsted Acis&Bases and Conjugate Acids&Bases?

Chem_Mod
Posts: 18891
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 716 times

Re: Different from Bronsted and Conjugate

Postby Chem_Mod » Sun Jul 30, 2017 10:15 pm

The Bronsted-Lowry acid/base definition defines acids as proton donors and bases as proton acceptors. A conjugate acid/base refers to the compound formed after an acid-base reaction. For example, in the generic reaction:



where HA is the acid, B- is the base, HB is the protoned base, and A- is the acid after the proton transfer. Since the acid (HA) released a proton, it became A-, which is basic since it can now accept a proton. This means that A- is HA's conjugate base. Similarly, since the base (B-) accepted a proton to form HB, HB is now an acidic since it has a proton to release. This means that HB is B-'s conjugate acid.

Michael Cheng 1C
Posts: 51
Joined: Thu Jul 13, 2017 3:00 am

Re: Different from Bronsted and Conjugate

Postby Michael Cheng 1C » Tue Dec 05, 2017 10:25 am

Is there a difference between Conjugate Bronsted acid/base and Conjugate Lewis acid/base?

Ella Bouris
Posts: 14
Joined: Thu Jul 27, 2017 3:01 am

Re: Different from Bronsted and Conjugate

Postby Ella Bouris » Tue Dec 05, 2017 10:26 pm

There shouldn't be a difference I think- it's more the context of the problem. If you define something using the Bronsted definition, that carries through the entire problem so a Bronsted acid would have a Bronsted base, and same with a Lewis acid.


Return to “Conjugate Acids & Bases”

Who is online

Users browsing this forum: No registered users and 2 guests