percentage protonation

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Ashley McClearnen 1B
Posts: 59
Joined: Fri Sep 28, 2018 12:26 am

percentage protonation

Postby Ashley McClearnen 1B » Fri Jan 18, 2019 5:28 pm

Can someone please explain what the percentage protonation is? I understand how to find it, but I'm confused about what it tells you.

Cynthia Ulloa
Posts: 52
Joined: Fri Feb 23, 2018 3:02 am

Re: percentage protonation

Postby Cynthia Ulloa » Fri Jan 18, 2019 5:33 pm

Percentage protonation is a way for us to check if it was okay to approximate our concentrations rather than use the quadratic formula. So, if the percentage was less than 5%, then we are good to go, but if it is higher than 5%, we are going to have to go back and use the quadratic formula.

Posts: 65
Joined: Fri Sep 28, 2018 12:15 am

Re: percentage protonation

Postby Shivangi_2J » Fri Jan 18, 2019 5:34 pm

Weak acids and bases do not fully dissociate as strong acids and bases do. Percentage protonation/deprotonation tells us how much of the acid or base has dissociated.

Percentage protonation tells you the percent of a base that has dissociated. In other words, its the percent of the base that has accepted a proton to become the conjugate acid.

Percentage deprotonation tells us essentially the same thing but it is the percent of an acid that has dissociated. It's how much of the original acid has donated a proton to become the conjugate base.

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