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Topic: Hydrolysis and Speciation, not making sense.  (Read 2653 times)

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Offline Twickel

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Hydrolysis and Speciation, not making sense.
« on: April 28, 2012, 03:38:56 AM »
Hi
I am having trouble understanding the diagram on slide 5 on the attached pdf, and the maths on slide 4 for it.

I do not understand the relationship between, pH and Ka or Pka whatever the maths is trying to show.

Its mostly the equations shown.

Thankyou, pleae help because I am so stuck.

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Offline Borek

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Re: Hydrolysis and Speciation, not making sense.
« Reply #1 on: April 28, 2012, 04:54:26 AM »
Red is a fraction of the protonated acetic acid (CH3COOH), blue is the fraction of the conjugate base (CH3COO-). The higher the pH the higher the fraction of the conjugate base (the more acid becomes neutralized), the lower the pH, the more acid is in the protonated form.
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Offline Twickel

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Re: Hydrolysis and Speciation, not making sense.
« Reply #2 on: April 28, 2012, 05:16:58 AM »
Thank you. I get that part, I do not understand the equations shown. the alpha acetic acid and aplha acetate.

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