Wikipedia says that the first acid dissociation constant of H2O2 is 11.65. I would like to know the second acid dissociation constant, which I cannot seem to find. There is not enough thermodynamic data in the NIST WebBook to calculate it myself. Also, I would like to know the answer both for anhydrous hydrogen peroxide and dilute hydrogen peroxide solution.
2007-09-29 05:54:58 · 3 answers · asked by 7 in Science & Mathematics ➔ Chemistry
I already got the answer that "there isn't really a second pKa". This is not a satisfactory answer, since we can, in fact, measure pKa and pKb values far greater than 14. For example, the second pKa of water is about 35 or 36. I would estimate the second pKa of hydrogen peroxide at 25-30; does anybody have an answer?
2007-10-01 11:11:33 · update #1
I think you're think ing of PH, which is how acidic it is. You should look up the PH of h2o2 on wikipedia. good luck!
2007-10-07 04:58:04 · answer #1 · answered by Anonymous · 0⤊ 1⤋
There really isn't a second pKa. If there were, it would be probably in excess of 14. However, the properties of water are that its pKa is 14.
2007-09-29 06:01:50 · answer #2 · answered by cattbarf 7 · 0⤊ 1⤋
Hello,
did you find this second pKa for H2O2. I also look at it but I cannot find it !
I agree it should be very basic.
Thanks
2015-07-02 03:44:31 · answer #3 · answered by Ransac 1 · 0⤊ 0⤋