1. The problem statement, all variables and given/known data Calculate the pH of 20.00 mL of 0.20 M KHP. Given: pKa1(H2P)= 2.950 pKa2(H2P)= 5.408 2. Relevant equations k = [H][P]/[HP] 3. The attempt at a solution I used this equation and got: 3.91e-6 = [x][x]/[.2] x^2 = 7.82e-7 x = 8.8e-4 = [H] pH = 3.05 However, my homework is telling me this is incorrect. Is it just a rounding issue or is it something else? Any help is much appreciated.