a. Iodic Acid (HIO3) is a weak acid with an equilibrium constant K a = 0.2. Use the techniques developed in class to find an expression for [H +] as a function of the normality, n, of the weak acid solution. This means that you need to solve the quadratic equation in [H +] using the quadratic formula, leaving n as a variable in this formula. Write the expression for [H +] in your Lab report. (You should use Equation Editor in Word to write this expression.)

b. Plot a graph of the [H +] as a function of the normality n for n [0.001,2]. Be sure to label your axes. What is the [H +] for a 0.5N solution of Iodic acid?

c. The pH of a solution is given by

pH = -log 10([H+]).
Plot a graph of the pH as a function of the normality n for n [0.001,2]. Be sure to label your axes. What is the normality of the solution that has a pH of 1?