Answer Happy

he Question 6 4 pts Suppose you would like to create a stable solution buffered to a pH of 10. Identify which of the following acid/c.base pairs would be the most appropriate for this solution. Use the following Ka table for reference: TABLE 13.2 Equilibrium Constants for Weak Acids and Their Conjugate Bases Acid K₂ Base Kb Sulfurous acid H₂SO₂ 1.7 x 10-² HSO₂ 5.9 x 10-¹2 Hydrogen sulfate ion HSO™ 1.0 x 10-² SO²- 1.0 x 10-¹2 Phosphoric acid H₂PO₂ 7.1 x 10- H₂PO₂™ 1.4 x 10-12 Hexaaquairon(III) ion Fe(H₂O)," 6.7 x 10-¹ Fe(H₂O),OH²+ 1.5 x 10-¹2 Hydrofluoric acid HF 6.9 x 10-4 F- 1.4 x 10-11 Nitrous acid HNO₂ 6.0 x 10-4 NO₂™ 1.7 x 10-1 Formic acid HCHO₂ 1.9 x 10-4 CHO 5.3 x 10-1 Lactic acid HCHO, 1.4 x 10-4 7.1 x 10-11 Benzoic acid 6.6 x 10-5 C₂H₂O₂ C₂H₂O₂ C₂H₂O₂ HC,H,O, HCHyOz 1.5 x 10-10 Acetic acid 1.8 x 10-5 5.6 x 10-10 Hexaaquaaluminum(III) ion AI(H₂O),²+ 1.2 x 10- 8.3 x 10-10 Carbonic acid 4.4 x 10-² AI(H₂O), OH²+ HCO, HPO,²- H₂CO₂ H₂POA™ 2.3 x 10- Dihydrogen phosphate ion 6.2 x 10- 1.6 x 10-² Hydrogen sulfite ion HSO₂ 6.0 x 10- 50,² 1.7 x 10-² Hypochlorous acid HCIO 28 x 10- CIO™ 3.6 x 107 Hydrocyanic acid HCN 5.8 x 10-10 CN™ 1.7 x 10
Hydrocyanic acid Ammonium ion Tetraaquazinc(11) ion Hydrogen carbonate ion Hydrogen phosphate ion NH, NHƯ Ọ NHƯ NH3 O HCIO/CIO O HCO3 /CO3²- HCN NH₁ Zn(H₂O),²+ HCO)" HPO HB(aq) H*(aq) + B-(aq) B-(aq) + H₂O HB(aq) + OH-(aq) Zn(H₂O)42 /Zn(H₂O)(OH)* HSO4 / SO4²- 5.8 x 10-10 5.6 x 10-10 3.3 x 10-10 4.7 x 10-11 4.5 x 10-¹ K₂= Kb= CN- NH₂ Zn(H₂O),OH+ CO₂²- PO [H*] × [HB] [HB] × [OH-] 1.7 x 10-5 1.8 x 10-5 3.0 x 10-5 2.1 x 10-4 2.2 x 10-²