Asked by Bianca

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.
Answered by DrBob222
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.
Answered by Bianca
Is it something like PH=pKa +log [base]/[acid]

3.40=??
How do I find the pKa?
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