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10. (12) Describe the preparation method you would use to prepare 2.5 L of a pH...
10. (12) Describe the preparation method you would use to prepare 2.5 L of a pH 5.00 buffer from a 0.100M HN3 solution and NaN3 solid. 2 logNoN NON LINE 1992
9. (21) Consider the titration of 25.0mL 0.210M CHaNH with 0.105M HCL Determine the equivalence Point volume. Volume - b. Determine the pH when 10.0mL HCI have been added. OIL pH- c. Determine the pH at the equivalence point. pH = d. Determine the pH when 75.0ml HCI have been added. pH = 10. (12) Describe the preparation method you would use to prepare 2.5 L of a pH 5.00 buffer from a 0.100M HNs solution and NaNo solid.
Describe how you would prepare one liter 0.1 M phosphate buffer, pH = 2.5, given 0.1 M phosphoric acid and solid NaH2PO4.2H2O. pKa= 4.75
5. You need to make 500.0 mL of a buffer with a pH of 2.20. You have the following substances to work with: 0.100 M NH3 Solid NaN3 Solid NaClO2 0.100 M HClO2 Solid NH4Cl Solid Na2SO3 0.100 M HN3 Solid NaHSO3 Ka for HClO2 = 1.1x10-2 Kb for NH3 = 1.8x10-5 Ka for HN3 = 1.9x10-5 Ka1 for H2SO3 = 1.7x10-2 Ka2 for H2SO3 = 6.4x10-8 (Assume that the addition of solid does not change the volume of the...
11. How would you prepare 1.00 L buffer with a pH = 4.00 using 1.00 M HF and solid Naf. 12. How would you prepare 1.00 L buffer with a pH = 4.70 using 1.00 M HC2H302 and 0.500 M Na C2H302. 13. How would you prepare 1.00 L buffer with a pH = 4.70 using 1.00 M HC2H30, and solid NaC2H3O2.
Buffer Calculations 8. Describe how you would prepare a 0.17 M pH 2.5 buffer using phosphoric acid and its phosphate salts
Describe the preparation of 10 liters of 0.02M phospate buffer, ph 6.9, starting from (a) a 2M H3PO4 solution and a 1 M KOH solution (b) 1M solutions of KH2PO4, and Na2HPO4 (c) solid Na3PO4 and 1M HCl Please provide detailed explanations!
Select a weak acid to prepare a buffer solution with a pH of 5.00 and describe how you would prepare 100.0 mL of that solution using a 0.100 M solution of the weak acid and a 0.100 M solution of the sodium salt of its conjugate base
Describe how you would prepare 250 ml of 0.2M phosphate buffer, pH =12.5, given solid Na2HPO4.2H2O and Na3PO4.H2O. pKa= 4.75
Starting from 0.5 M formic acid and solid sodium formate. Describe how to prepare 5 L of Formate buffer, pH = 4, Ka =1.78×10-4