SnailsAttack
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Acid pKa values table printout
I wanted a decent table I could print out that has the pKa values for common acids, and wasn't satisfied with the ones I could find online, which are
usually either poorly formatted, bulky (either with excessive whitespace, redundant info or obscure acids) or lacking data for common acids (carbonic
acid may not be real but it still deserves to be on the table).
Anyways, I put my own table together in excel. The file and an image of it are attached. If there's mistakes or I'm missing any important acids, tell
me and I'll fix it.
Attachment: acid pKa values table.xlsx (10kB)
This file has been downloaded 20 times
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woelen
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Good to have a compact and easy to use table. But compactness and completeness of course are competing.
Some not so obscure acids, which also can be interesting are the following:
- methanesulfonic acid, HSO3CH3 --> this is a very nice and relatively cheap alternative to H2SO4 which is not regulated in the EU
- bromic acid, HBrO3
- periodic acid, H5IO6, first two or three hydrogens
- thiocyanic acid, HSCN
- permanganic acid, HMnO4
- phosphorous acid, H3PO3, only two hydrogens can split off, one hydrogen is attached to P directly and non-acidic
- hypophosphorous acid, a.k.a. phosphinic acid, H3PO2, only one hydrogen can split off, two hydrogens are attached to P directly and non-acidic
- arsenic acid, H3AsO4, three hydrogens can split off
- arsenious acid, H3AsO3, three hydrogens can split off
- selenic acid, H2SeO4
- selenous acid, H2SeO3
- telluric acid, H6TeO6, first two or three hydrogens
- tellurous acid, H2TeO3
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bnull
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The CRC Handbook of Chemistry and Physics, the Merck Index, and the Dean's Handbook of Chemistry have pKa values of several acids, which you can use
to expand your table. You could include abbreviated comments in a sixth column (a source for the values, for example).
By the way, carbonic acid is real; it is dehydrated by water, though.
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