The Vespiary

The Hive => Chemistry Discourse => Topic started by: Lilienthal on October 14, 2002, 11:24:00 PM

Title: Need pKa of pyrophosphoric acid
Post by: Lilienthal on October 14, 2002, 11:24:00 PM

I need the pK_as of pyrophosphoric acid = H4P2O6 or an ester thereof. Unfortunately I don't have a book here, but I have already checked Google and ClearLight's link  ::) .
Thanks  :)

Title: pka
Post by: GC_MS on October 14, 2002, 11:34:00 PM

0.9 - 2.0 - 6.6 - 9.4

http://216.239.33.100/search?q=cache%3A4FpZn1kqkJcC%3Aicg.harvard.edu/~chem206/Fall_2001/lectures/18_Acid_Based_Properties_of_Organic_Molecules/pKa_compilation.pdf+pka+%2B+pyrophosphoric&hl=en&ie=UTF-8 (http://216.239.33.100/search?q=cache%3A4FpZn1kqkJcC%3Aicg.harvard.edu/~chem206/Fall_2001/lectures/18_Acid_Based_Properties_of_Organic_Molecules/pKa_compilation.pdf+pka+%2B+pyrophosphoric&hl=en&ie=UTF-8)

Another page gives 0.9, 1.5, 5.8, 8.2 though...

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Title: Thanks a lot, good find.
Post by: Lilienthal on October 15, 2002, 10:02:00 AM

Thanks a lot, good find. Google seems to have problems with * as a wildcard!?