What is the pH of a buffer prepared by adding 1.20 X 10-3 mol/L NaC2H3O2 and
1.20 X 10-2 mol/L HC2H3O2? The Ka for acetic acid is 1.75 X 10-5.
What is the pOH of a buffer prepared by adding 3.50 X 10-5 mol/L NH4OH and
2.50 X 10-4 mol/L NH4Cl? The pKb for NH4OH is 4.75.
What is the pH of the buffer in exercise 6?
An acetate buffer, pH 5.20, was prepared using 0.100 mol/L acetic acid. The pKa
for acetic acid is 4.76. What concentration of salt is needed?
A 0.050 mol/L bicarbonate buffer with a pH of 5.60 is to be prepared. The pKa of
carbonic acid is 6.12. What concentration of sodium bicarbonate and carbonic
acid are needed to prepare the buffer?