1) A 0.100 mole quantity of a monoprotic acid HA is added to1.00 L of pure water. When equilibrium is reached, the pH of the solution is 3.75. What is the value of Ka for the acid HA?
2) A 0.250 g quantity of an acid is titrated with 0.108 MNaOH. It takes 27.22 mL of NaOH to reach the end point. What is the equivalent weight of the acid?