The triprotic acid H3A has ionization constants of Ka1 = 9.9× 10–2, Ka2 = 2.7× 10–8, and Ka3 = 5.9× 10–11.

Question

a). Calculate the following values for a 0.0570 M solution of NaH2A

H+ ??
[H2A^-/H3A]??

b). Calculate the following values for a 0.0570 M solution of Na2HA.

H+ ??
[HA^2-/H2A]??

they give you the formulas to solve for H+ but i've tried it so many times and it is still wrong..

Answer 1

Let's try using the formula and see what we get? Or better still post the formula and your work and I can find the error.