Calculate the pH of a solution prepared by dissolving 18.32 grams of benzoic acid and 43.23 grams of sodium benzoate in water sufficient to yield 1.00 L of solution. (The Ka of benzoic acid is 6.30 × 10-5, the molar mass of benzoic acid is 122.12 g/mol, and the molar mass of sodium benzoate is 144.10 g/mol