Suppose you would like to create a stable solution buffered to a pH of 10. Identify which of the following acid/c.base p

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Suppose You Would Like To Create A Stable Solution Buffered To A Ph Of 10 Identify Which Of The Following Acid C Base P 1 (73.65 KiB) Viewed 22 times

Suppose You Would Like To Create A Stable Solution Buffered To A Ph Of 10 Identify Which Of The Following Acid C Base P 2 (42.78 KiB) Viewed 22 times

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 H₂SO, 1.7 x 10-² HSO, 5.9 x 10-13 Hydrogen sulfate ion HSOA™ 1.0 x 10-² SO₁²- 1.0 x 10-¹2 Phosphoric acid H₂PO4 7.1 x 10-³ H₂PO4 1.4 x 10-¹2 Hexaaquairon(III) ion Fe(H₂O),¹+ 6.7 x 10-³ 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 10-11 Formic acid HCHO₂ 1.9 x 10-4 CHO₂ 5.3 x 10-11 Lactic acid HCHO, 1.4 x 10-4 C₂H₂O₂ 7.1 x 10-¹1 Benzoic acid HC,H,Oz 6.6 x 10-5 1.5 x 10-10 C₂H₂O₂ C₂H₂O₂ Acetic acid HCHyOz 1.8 x 10-5 5.6 x 10-10 Hexaaquaaluminum(III) ion AI(H₂O).** 1.2 x 10- AI(H₂O), OH²+ 8.3 x 10-10 Carbonic acid H₂CO₂ 4.4 x 10-7 HCO, 2.3 x 10-B Dihydrogen phosphate ion H₂POA™ 6.2 x 10-ª HPO- 1.6 x 10-7 Hydrogen sulfite ion HSO₂™ 6.0 x 10-⁰ 50,²- 1.7 x 10-7 Hypochlorous acid HCIO 2.8 x 10- CIO- 3.6 x 10- Hydrocyanic acid HCN 5.8 x 10-10 CN- 1.7 x 10- Ammonium ion NH₂* 5.6 x 10-10 NH₂ 1.8 x 10- Tetraquazinc(II) ion Zn(H₂O), 3.3 x 10-10 Zn(H₂O),OH+ 3.0 x 10-5 Hydrogen carbonate ion HCO, 4.7 x 10-1 CO₂²- 2.1 x 10-4 Hydrogen phosphate ion HPO 2- 4.5 x 10-¹ PO 22x10²
Hypochlorous acid Hydrocyanic acid Ammonium ion Tetraaquazinc (II) ion Hydrogen carbonate ion Hydrogen phosphate ion HCIO HCN NH₁+ Zn(H₂O),²+ HCO™ HPO4²- HB(aq) H(aq) + B-(aq) B-(aq) + H₂O HB(aq) + OH-(aq) O HCO3 /CO3²- HSO4 / SO4²- O Zn(H₂O)42+/Zn(H₂O)(OH)** NH4/ NH3 O NH3/NH4+ HCIO/CIO 2.8 x 10- 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 CIO- CN- NH₂ Zn(H₂O),OH+ CO₂²- PO- [H*] x [HB] [HB] x [OH-] K₂= Kb = 3.6 x 10-7 1.7 x 10-5 1.8 x 10- 3.0 x 10-5 2.1 x 10-4 2.2 x 10-²