sample of an aqueous weak base (RNH2, where R is an tion with a standard 0.150 M HBr(aq) titrant. The pH at th e ionization constant (K₁) of this base? x 10-5 x 10-10 x 10-5 x 10-10

Chemistry & Chemical Reactivity
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Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
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Chapter17: Principles Of Chemical Reactivity: Other Aspects Of Aqueous Equilibria
Section: Chapter Questions
Problem 116SCQ: Two acids, each approximately 0.01 M in concentration, are titrated separately with a strong base....
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A 25.0-mL sample of an aqueous weak base (RNH2, where R is an alkyl group) required 22.5 mL for complete
neutralization with a standard 0.150 M HBr(aq) titrant. The pH at the equivalence point was found to be 5.40.
What is the ionization constant (K₁) of this base?
4.48 x 10-5
O 1.06 x 10-10
9.46 x 10-5
O 2.23 x 10-10
Transcribed Image Text:A 25.0-mL sample of an aqueous weak base (RNH2, where R is an alkyl group) required 22.5 mL for complete neutralization with a standard 0.150 M HBr(aq) titrant. The pH at the equivalence point was found to be 5.40. What is the ionization constant (K₁) of this base? 4.48 x 10-5 O 1.06 x 10-10 9.46 x 10-5 O 2.23 x 10-10
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