Consider the following acids and bases: HCO2H Ka = 1.8 × 10-4 HOBr Ka = 2.0 × 10-9 (C2H5)2NH Kb = 1.3 × 10-3 HONH2 Kb = 1.1 × 10-8 Choose substances from the following list that would be the best choice to prepare a pH = 6.0 buffer solution. (Choose all the letters that apply.) a. HCO2H b. (C2H5)2NH c. KHCO2 d. HONH3NO3 e. HOBr f. HONH2 g. (C2H5)2NH2Cl h. NaOBr
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Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.
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Consider the following acids and bases:
HCO2H Ka = 1.8 × 10-4
HOBr Ka = 2.0 × 10-9
(C2H5)2NH Kb = 1.3 × 10-3
HONH2 Kb = 1.1 × 10-8
Choose substances from the following list that would be the best choice to prepare a pH = 6.0 buffer solution.
(Choose all the letters that apply.)
a. HCO2H
b. (C2H5)2NH
c. KHCO2
d. HONH3NO3
e. HOBr
f. HONH2
g. (C2H5)2NH2Cl
h. NaOBr
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