Question

1a) What is the pH of a solution of adding 10 mL of a 0.10 M NaOH solution to pure water?

b) What is the pH of a buffered solution created by adding 10 mL of a 0.10 M NaOH to 40

mL of a 0.15M solution of HF, Ka =6.8x10–4?

c) Buffer 1 is created such that the weak acid, HA, is 0.80 M and base, A–, is 0.80 M. Buffer

2 is created such that the weak acid, HA, is 0.080 M, and base, A–, is 0.080M. Which buffer has the greater buffer capacity? Briefly explain.

Answer 1