Question

How much more acetic acid (pKa = 4.76) than acetate should be in solution to maintain a pH of 4.00?

Answer 1

4.00 = 4.76 + log b/a
b/a = ?

Answer 2

When I solve for b/a it equal 0.17, but I'm supposed to find how much more acetic acid should be in the solution.. How do I do that?

Answer 3

you solved for b/a but need how much more acid which would be a/b so to get the amount more of acid do the reciprocal which would be 1/.17 =5.75 so 5.75 times more acid