You have75.0 mL of a 0.25M solution of a weak base, ethanol amine, HOC2H4NH2, with a kb= 2.8x10^-5. It is to be titrated with 0.50 M HCl. What is the pH of the resulting solutions after the following additions? (a) initial pH (B)after 10.50 mL of HCl have been added (c) 1/2 way to the equivalence point (d) at the equivalence point (E) after 40 mL of HCl has been added (f) what indicator would you choose to signal the endpoint, and WHY?
You have75.0 mL of a 0.25M solution of a weak base, ethanol amine, HOC2H4NH2, with a kb= 2.8x10^-5. It is to be titrated with 0.50 M HCl. What is the pH of the resulting solutions after the following additions? (a) initial pH (B)after 10.50 mL of HCl have been added (c) 1/2 way to the equivalence point (d) at the equivalence point (E) after 40 mL of HCl has been added (f) what indicator would you choose to signal the endpoint, and WHY?
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter15: Acid–base Equilibria
Section: Chapter Questions
Problem 57P
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Question
You have75.0 mL of a 0.25M solution of a weak base, ethanol
(a) initial pH
(B)after 10.50 mL of HCl have been added
(c) 1/2 way to the equivalence point
(d) at the equivalence point
(E) after 40 mL of HCl has been added
(f) what indicator would you choose to signal the endpoint, and WHY?
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