Ka2 in Acids

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Nathan Mariano 2G
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Joined: Fri Sep 28, 2018 12:29 am

Ka2 in Acids

Postby Nathan Mariano 2G » Sun Mar 10, 2019 11:36 pm

When is Ka2 considered negligible when performing calculations with polyprotic acids?

Posts: 76
Joined: Fri Sep 28, 2018 12:24 am

Re: Ka2 in Acids

Postby EllerySchlingmann1E » Mon Mar 11, 2019 9:42 am

Ka2 is considered negligible when it is significantly smaller than Ka1. Unfortunately, I don't there is an actual cut off so I don't think you have to worry too much about.

Alysa Rallistan 2G
Posts: 32
Joined: Thu Jan 17, 2019 12:16 am

Re: Ka2 in Acids

Postby Alysa Rallistan 2G » Mon Mar 11, 2019 11:27 pm

Usually problems that will have you consider the value of Ka2 will give you a Ka1 value that is considerably small, and may ask you to find Ka2 either the value or expression or both

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