A chemist mixes equal volumes of 0.1 M HF and 0.005 M NaF. What is the reason why this solution will not make an effective buffer solution?
a) HF is not a weak acid, and NaF is not a salt of a weak acid
b) The concentrations of weak acid and weak base components differ by more than 10x in this solution
c) The solution does not contain a mixture of a weak acid and its conjugate base
d) In an effective buffer solution, the concentration of the weak base component should be higher than the concentration of the weak acid component
e) The concentrations of HF and NaF are too low for an effective buffer solution