Calculate the pH of the solution that results from each of the following mixtures. PART A 150.0 mL of 0.26 M HF with 230.0 mL of 0.32 M NaF The Ka of hydrofluoric acid is 6.8 x 10−4. Express your answer using two decimal places.
PART B 170.0 mL of 0.11 M C2H5NH2 with 270.0 mL of 0.22 M C2H5NH3Cl. Express your answer using two decimal places.

alfred von schlieffen, german army chief of staff, was given instructions to devise a strategy that would be able to counter a joint attack. in december, 1905, he began circulating what later became known as the schlieffen plan. schlieffen argued that if war took place it was vital that france was speedily defeated.

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)