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posted by Bianca Monday, November 19, 2012 at 2:14pm.

Find the mass of sodium formate that must be dissolved in 200.00cm^3 of a 1.0M solution of formic acid to prepare a buffer solution with pH=3.40? I have no clue how to work this out. Please help me.

If you know how to use the Henderson-Hasselbalch equation that is the way to go. If not, let me know and it can be done another way.

Is it something like PH=pKa +log [base]/[acid] 3.40=?? How do I find the pKa?

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