How many moles of HCl are required to change the pH of 500 ml of 0.100 M Phosphate buffer, pH 12.6, to a final pH of 2.00? The pKa's of phosphate are 2.12, 7.21, and 12.32?
I'm trying to solve this problem in 3 different steps
1) use the H-H to go from PO4 (-3) to the -2 species
2) number of moles of -2 species = number of moles of acid needed to go to -1 species
3) Use the H-H to go from -1 to the acidic form..
Thanx! |
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