86. Table 3 lists four solids and four solutions that are available to you. What combinations of reactants you use to prepare buffers with each of the would following pH values? (8.8) (a) 3.0 (c) 5.0 (b) 4.0 (d) 7.0 Table 3 Available Reactants Solids Solutions K of acid 6.6 X 10-4 potassium fluoride 5.0 mol/L hydrofluoric acid 1.8 X 10-5 sodium ethanoate 1.0 mol/L ethanoic acid 6.3 x 10-5 sodium benzoate 2.6 mol/L benzoic acid potassium dihydrogen phosphate 1.0 mol/L phosphoric 7.1 x 10-3 acid, H3PO,(aq)