KA2 Help

Acidity
Basicity
The Conjugate Seesaw

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BoparaiAdeshsurjit2F
Posts: 112
Joined: Wed Sep 30, 2020 9:51 pm

KA2 Help

Postby BoparaiAdeshsurjit2F » Tue Jan 26, 2021 4:21 pm

When can you assume that the pH of the second deprotonation of an acid is the same as the first? Is it when KA1 is less than Ka2?
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Katie_Dinh_1D
Posts: 53
Joined: Wed Feb 19, 2020 12:18 am
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Re: KA2 Help

Postby Katie_Dinh_1D » Tue Jan 26, 2021 4:35 pm

I think it is when Ka1 is greater than Ka2!
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Ryan_Page_1J
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Re: KA2 Help

Postby Ryan_Page_1J » Tue Jan 26, 2021 5:03 pm

I believe you are able to ignore the second ionization constant when KA2 is less than KA1
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Darlene Lien 3E
Posts: 132
Joined: Wed Sep 30, 2020 9:37 pm

Re: KA2 Help

Postby Darlene Lien 3E » Tue Jan 26, 2021 5:53 pm

You would ignore the second ionization when Ka1>>Ka2. I think there are a few questions in Topic 6E that you could refer to in the outline that cover this. Hope this helps!
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