Which of the following combinations would make a buffer with pH closest to 9.0? HClO2 Ka = 1.1 × 10-2 NH3 Kb = 1.8 × 10-5 HNO2 Ka = 7.2 × 10-4 C5H5N Kb = 1.5 × 10-9 Equal volumes of 0.10 M HCl and 0.10 M NaCl Equal volumes of 0.10 M HNO2 and 0.10 M NaNO2 Equal volumes of 0.10 M NH4Cl and 0.10 M NH3 Equal volumes of 0.10 M HClO2 and 0.10 M NaClO2 Equal volumes of 0.10 M C5H5NHCl and 0.10 M C5H5N
Which of the following combinations would make a buffer with pH closest to 9.0? HClO2 Ka = 1.1 × 10-2 NH3 Kb = 1.8 × 10-5 HNO2 Ka = 7.2 × 10-4 C5H5N Kb = 1.5 × 10-9 Equal volumes of 0.10 M HCl and 0.10 M NaCl Equal volumes of 0.10 M HNO2 and 0.10 M NaNO2 Equal volumes of 0.10 M NH4Cl and 0.10 M NH3 Equal volumes of 0.10 M HClO2 and 0.10 M NaClO2 Equal volumes of 0.10 M C5H5NHCl and 0.10 M C5H5N
Chapter15: Acid-base Equilibria
Section: Chapter Questions
Problem 59E: Consider the titration of 100.0 mL of 0.200 M acetic acid (Ka = 1.8 105) by 0.100 M KOH. Calculate...
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Which of the following combinations would make a buffer with pH closest to 9.0?
HClO2 Ka = 1.1 × 10-2
NH3 Kb = 1.8 × 10-5
HNO2 Ka = 7.2 × 10-4
C5H5N Kb = 1.5 × 10-9
Equal volumes of 0.10 M HCl and 0.10 M NaCl
Equal volumes of 0.10 M HNO2 and 0.10 M NaNO2
Equal volumes of 0.10 M NH4Cl and 0.10 M NH3
Equal volumes of 0.10 M HClO2 and 0.10 M NaClO2
Equal volumes of 0.10 M C5H5NHCl and 0.10 M C5H5N
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