AUTOPROTOLYSIS

Moderators: Chem_Mod, Chem_Admin

Funmi Baruwa
Posts: 108
Joined: Wed Sep 30, 2020 9:50 pm

AUTOPROTOLYSIS

Postby Funmi Baruwa » Fri Jan 22, 2021 6:54 am

Could someone please explain what autoprotolysis is, and its importance? Is it the conversion of water to H3O+ and OH-?

Astha Sahoo 3I
Posts: 90
Joined: Wed Sep 30, 2020 9:52 pm
Been upvoted: 1 time

Re: AUTOPROTOLYSIS

Postby Astha Sahoo 3I » Fri Jan 22, 2021 7:19 am

Yes. It's when a proton from two identical molecules ionizes one of the molecules. In water, the H+ from one H2O molecule ionizes the other one so H3O+ is formed, and the molecule that lost the proton is now OH-. Hope this helps!

Trevor_Ramsey_3H
Posts: 94
Joined: Wed Sep 30, 2020 9:58 pm

Re: AUTOPROTOLYSIS

Postby Trevor_Ramsey_3H » Fri Jan 22, 2021 10:36 am

Autoprotolysis is basically a proton transfer between similar molecules. The example Professor Lavelle uses is water, but this can also be applied to NH3+NH3.

Mahnoor_Wani_1I
Posts: 118
Joined: Wed Sep 30, 2020 9:35 pm
Been upvoted: 3 times

Re: AUTOPROTOLYSIS

Postby Mahnoor_Wani_1I » Fri Jan 22, 2021 11:35 am

Autoprotolysis is when one molecule transfers a proton to another molecule of the same kind. Its a molecule that is amphoteric like water. Water is the most common example of autoprotolysis. The kw is the autoprotolysis constant.

Adam Bustamante 1I
Posts: 93
Joined: Wed Sep 30, 2020 9:51 pm

Re: AUTOPROTOLYSIS

Postby Adam Bustamante 1I » Fri Jan 22, 2021 11:54 am

Autoprotolysis is a molecule transfers a proton to a similar molecule, like in H2O. A proton is transfer to another H2O and becomes H3O+, making the one that transferred the proton OH-.

Akash J 1J
Posts: 95
Joined: Wed Sep 30, 2020 9:58 pm
Been upvoted: 1 time

Re: AUTOPROTOLYSIS

Postby Akash J 1J » Fri Jan 22, 2021 12:11 pm

Funmi Baruwa wrote:Could someone please explain what autoprotolysis is, and its importance? Is it the conversion of water to H3O+ and OH-?


Autoprotolysis is similar to what it sounds like. It's "automatic" protolysis (or proton transfer). In this context, autoprotolysis is happening in water, so you can think of it as some water molecules "automatically" giving a proton to another water molecule, forming a very small concentration of H3o+ and OH-. It is measured to have a Kw = 10^-7, hence pH of 7.

Funmi Baruwa
Posts: 108
Joined: Wed Sep 30, 2020 9:50 pm

Re: AUTOPROTOLYSIS

Postby Funmi Baruwa » Thu Jan 28, 2021 1:26 pm

oh okay so it is proton transfer, but it doesn't necessarily have to involve water molecules?

Astha Sahoo 3I
Posts: 90
Joined: Wed Sep 30, 2020 9:52 pm
Been upvoted: 1 time

Re: AUTOPROTOLYSIS

Postby Astha Sahoo 3I » Thu Jan 28, 2021 9:16 pm

Funmi Baruwa wrote:oh okay so it is proton transfer, but it doesn't necessarily have to involve water molecules?

Yes! The proton transfer just has to happen between two of the same molecules.


Return to “Equilibrium Constants & Calculating Concentrations”

Who is online

Users browsing this forum: No registered users and 2 guests