You have 0.10-mol samples of three acids identified simply as HX, HY, and HZ. For each acid,

Question:

You have 0.10-mol samples of three acids identified simply as HX, HY, and HZ. For each acid, you make up 0.10 M solutions by adding sufficient water to each of the acid samples. When you measure the pH of these samples, you find that the pH of HX is greater than the pH of HY, which in turn is greater than the pH of HZ.
a. Which of the acids is the least ionized in its solution?
b. Which acid has the largest Ka?