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Which of the Following Solutions Will Be the Best Buffer

Question 26

Multiple Choice

Which of the following solutions will be the best buffer at a pH of 9.26? (Ka for HC2H3O2 is 1.8 × 10-5; Kb for NH3 is 1.8 × 10-5.)


A) 0.20M NH3 and 0.20M NH4Cl
B) 5.0M HC2H3O2 and 5.0M NH4Cl
C) 0.20M HC2H3O2 and 0.20M NaC2H3O2
D) 5.0M NH3 and 5.0M NH4Cl
E) 5.0M HC2H3O2 and 5.0M NH3

Correct Answer:

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