Calculate the concentrations of potassium acetate and acetic acid necessary to prepare a 0.5M buffer solution at pH 5.2.
a) Concentration of potassium acetate: 0.5M, concentration of acetic acid: 0.5M
b) Concentration of potassium acetate: 0.5M, concentration of acetic acid: 1.0M
c) Concentration of potassium acetate: 1.0M, concentration of acetic acid: 0.5M
d) Concentration of potassium acetate: 1.0M, concentration of acetic acid: 1.0M
