Question 1: HA is a weak acid. Its ionization constant, Ka, is 2.7 x 10-13. Calculate the pH of an aqueous solution where the initial concentration of NaA is 0.059 M.
Question 2: 0.118 mol of a weak acid, HA, is placed in enough water to produce 1.00 L of solution. The final pH of this solution is 1.12. Calculate the ionization constant, Ka, of HA.
Question 3: 0.618 mol of a weak acid, HA, and 12.0 g of NaOH are placed in enough water to produce 1.00 L of solution. The final pH of this solution is 4.15. Calculate the ionization constant, Ka, of HA.