You wish to prepare a buffer solution with (a) How many
Chapter 17, Problem 15(choose chapter or problem)
You wish to prepare a buffer solution with (a) How many grams of would you add to 425 mL of 0.258 M to do this? Assume that the solution s volume remains constant. (b) Which buffer component, and how much (in grams), would you add to 0.100 L of the buffer in part (a) to change its pH to 9.30? Assume that the solution s volume remains constant. NH3 (NH4)2SO4 pH = 9.45. (C6H5NH2)? (C6H5NH3 +Cl-) (C6H5NH2)? (C6H5NH3 +Cl-) 3H2PO4 -] = 0.050 M and 3HPO4 2-] = 0.150 M. H2PO4 - HPO4 2- 0.100 M CH3COOH 0.125 M NaCH3CH2COO 0.200 M NaCH3COO 0.050 M NaNO2 0.150 M CH3NH3 +Cl- 0.100 M CH3NH2 0.100 M NH4Cl KHC3H5O3 pH = 4.11. a NaCH3CH2COO CH3CH2COOH, 0.408 M NH3 NH4Cl. NaC6H5COO; 0.012 M C6H5COOH(Ka = 6.3 * 10-5) Kb = 1.8 * 10-5. pH = 9.12? NH3 , 3NH4 +4 = 0.732 M 3NH34, Ka = 1.8 * 10-4 HCOOH + H2O H3O+ + HCOO - pH = 4.06? HCOOH 3HCOO-4,
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