Question

7.1. How many grams of solid potassium hypochlorite should be added to 2.00 L of a 0.244 M hypochlorous acid solution to prepare a buffer with a pH of 6.733 ?   ka = 3.5×10^-8

grams potassium hypochlorite =  g.

7.2. How many grams of solid ammonium chloride should be added to 2.00 L of a 0.273 M ammonia solution to prepare a buffer with a pH of 10.150 ? grams ammonium chloride = g.   k_a = 1.8×10^-5

7.3. How many grams of solid ammonium bromide should be added to 0.500 L of a 0.135 M ammonia solution to prepare a buffer with a pH of 10.190? k_a = 1.8×10^-5

grams ammonium bromide =  g.

Answer 1