Asked by Liz

How would I find the concentration of an unknown acid if I have a Ka value of 3.98x10^-5?
Answered by bobpursley
Hmmm. You have to know more than that.
Answered by Liz
sorry I forgot to add the rest. I also have the concentration of NaOH which is 1.0 M, pKa is 4.4, and the volume of the acid is 25 mL
Answered by DrBob222
You should type the problem from scratch. You also need to know the volume of the NaOH. Then
mols NaOH = M x L = ?
mols acid (if monoprotic) = mols NaOH
Then M acid = mols acid/L acid.
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