Answer to Question #338317 in Physical Chemistry for Ahh

Question #338317

1. Calculate the pH of the original buffer solution of dihydrogen phosphate/hydrogen phosphate.

2. Calculate the pH The 20 mL (dihydrogen phosphate/hydrogen phosphate buffer) solution when 1 mL of 0.1 molL-1 NaOH has been added

3. Calculate the pH of the 20 mL (dihydrogen phosphate/hydrogen phosphate buffer) solution when 1 mL of 0.1 molL-1 HCl has been added

- Using the Henderson formula for the pH of a solution: pH = pKa + log ([A-]/ [HA]), and show working out

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