How many grams of solid potassium hypochlorite should be added to 0.500 L of a 0.224 M hypochlorous acid solution to prepare a buffer with a pH of 8.338 ? Answer in grams potassium hypochlorite ----------------- How many grams of solid ammonium bromide should be added to 1.50 L of a 0.196 M ammonia solution to prepare a buffer with a pH of 9.820 ? Answer in grams ammonium bromide ----------------- How many grams of solid sodium fluoride should be added to 1.00 L of a 0.243 M hydrofluoric acid solution to prepare a buffer with a pH of 2.146 ? Answer in grams sodium fluoride