Protonation & Deprotonation

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Caroline Beecher 2H
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Joined: Wed Nov 14, 2018 12:21 am

Protonation & Deprotonation

Postby Caroline Beecher 2H » Thu Jan 16, 2020 2:14 pm

What is protonation or deprotonation referring to when talking about acids and bases? How do we calculate percent protonation/deprotonation?

Cooper Baddley 1F
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Joined: Wed Sep 18, 2019 12:19 am

Re: Protonation & Deprotonation

Postby Cooper Baddley 1F » Thu Jan 16, 2020 2:32 pm

When referring to acids and bases protonation is gaining a proton so this usually refers to a base as they are the ones that gain an electron and deprotonation refers to the acid because they are the ones giving up a proton.

Vincent Leong 2B
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Joined: Fri Aug 09, 2019 12:15 am

Re: Protonation & Deprotonation

Postby Vincent Leong 2B » Thu Jan 16, 2020 2:47 pm

To calculate % deprotonation (because this is the most common factor that questions ask for),
1) solve for the x variable in the ICE table
2) put x over the initial concentration (Divide x by initial concentration: x/[R])
3) multiply by 100 to convert that to number to a %
4) that is your % deprotonation

KBELTRAMI_1E
Posts: 108
Joined: Sat Jul 20, 2019 12:17 am

Re: Protonation & Deprotonation

Postby KBELTRAMI_1E » Thu Jan 16, 2020 2:57 pm

I think that this is what Lavelle was trying to demonstrate using the Lewis structures in the water example of how pH is decided. Like H3O+ vs OH-, OH- is deprotonated and H3O+ is protonated?

KBELTRAMI_1E
Posts: 108
Joined: Sat Jul 20, 2019 12:17 am

Re: Protonation & Deprotonation

Postby KBELTRAMI_1E » Thu Jan 16, 2020 2:57 pm

Vincent Leong 2B wrote:To calculate % deprotonation (because this is the most common factor that questions ask for),
1) solve for the x variable in the ICE table
2) put x over the initial concentration (Divide x by initial concentration: x/[R])
3) multiply by 100 to convert that to number to a %
4) that is your % deprotonation


What is the significance of this?

805307623
Posts: 99
Joined: Fri Aug 09, 2019 12:17 am

Re: Protonation & Deprotonation

Postby 805307623 » Thu Jan 16, 2020 2:58 pm

Protonation occurs when a proton is added to an atom, molecule, or ion. Protonation and deprotonation occur in most acid-base reaction. A species' mass and charge change, and its chemical properties are altered when it is either protonated or deprotonated. For example, water can be protonated by sulfuric acid: H2SO4 + H2O ⇌ H3O+ + HSO-4

MeeraBhagat
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Joined: Sat Aug 24, 2019 12:15 am

Re: Protonation & Deprotonation

Postby MeeraBhagat » Thu Jan 16, 2020 5:29 pm

Protonation occurs when a hydrogen ion is added to a molecule, and deprotonation happens when a molecule loses a proton. Bases are often protonated and acids are usually deprotonated. You calculate % protonation by dividing the product species that has been protonated/deprotonated by its conjugate form on the reactant side, then multiply by 100 to get the percentage.

annikaying
Posts: 94
Joined: Sat Sep 14, 2019 12:16 am

Re: Protonation & Deprotonation

Postby annikaying » Thu Jan 16, 2020 5:37 pm

protonation is the addition of a proton and deprotonation is the removal of a proton. Protonation refers to bases usually and deprotonation to acids.

Pablo 1K
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Joined: Sat Feb 02, 2019 12:15 am

Re: Protonation & Deprotonation

Postby Pablo 1K » Thu Jan 16, 2020 7:14 pm

Protonation for bases mostly and deprotonation for acids. Refers to gaining, losing protons

KaleenaJezycki_1I
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Re: Protonation & Deprotonation

Postby KaleenaJezycki_1I » Thu Jan 16, 2020 7:49 pm

Was this a question assigned in the textbook??


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