Question

1. Calculate the pK_aof HCl if a 0.020 M solution of HCl has a pH of 1.50.
2. Calculate how much CH₃COONa solid you would need to add to 100 mL of a 0.1M CH₃COOH solution to make a buffer with a pH of 4.75. The K_aof CH₃COOH is 1.8 x 10^-5, MW CH₃COONa = 82.0343 g/mol)

Answer 1