A 25.0-mL sample of an aqueous weak base (RNH2, where R is an alkyl group) required 22.5 mL for completeneutralization 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 10-5O 1.06 x 10-109.46 x 10-5O 2.23 x 10-10

Given, pH = 5.40 At equivalence point, salt is formed. If equal is mixed, then concentration is…

Answered: sample of an aqueous weak base (RNH2,…

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: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter14: Equilibria In Acid-base Solutions

Section: Chapter Questions

Problem 74QAP: Fifty cm3 of 1.000 M nitrous acid is titrated with 0.850 M NaOH. What is the pH of the solution (a)...

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Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

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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