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pH calculation lectures - comments welcomed

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Borek:
For anybody interested in pH calculation some lectures and some questions:

http://www.chembuddy.com/?left=pH-calculation&right=toc

I will be adding questions, no plans about changes in lectures (unless there will be some mistake crying for correction).

hannibal:
i have a solution containing ethanol,water,acetic acid and ethyl acetate(basically an esterification reaction mixture). is there any software online which can find the ph of this solution.
one very crude method would be to find the dissociation of acetic acid in water and in alcohol ,assuming them to be separate mixture find H+ in each and then add the H+ of each mixture to get the total amount of H+ present. from this we can get the pH....but i dont know how accurate it is,pls help me out

Borek:
Idea of adding H+ concentrations seems wrong to me, but that's only intuition. No idea how to do the calculations, never heard of such programs (but then I have spent last 20 years farfrom chemistry). Whenever I see information about experiments done in mixed solvents pH is measured, not calculated, and to obtain correct pH acid or base is added while controlling pH with pH-meter. (This is a monster-phrase, but I am too tired after 30 miles on bike to think in English :) ).

lemonoman:
(I'm assuming you designed this page yourself):

Man, that stuff looks 'ill' as all da ganstaz say - that means awesome.

I've always thought that the Internet needed an 'authority' on analytical chemistry - a subject that REALLY seems to throw people off balance.  I knew that to be used and popular, it had to be in layman's terms, so that maybe even highschool students could understand - and it had to be easy to use, and appealing to look at.

This site does all three.

That's awesome man, keep it up.

Borek:

--- Quote from: lemonoman on June 25, 2005, 03:53:36 PM ---(I'm assuming you designed this page yourself):
--- End quote ---

I did.


--- Quote ---Man, that stuff looks 'ill' as all da ganstaz say - that means awesome.
--- End quote ---

You are welcome :)

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