General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter4: Chemical Reactions
Section: Chapter Questions
Problem 4.130QP: Arsenic acid, H3AsO4, is a poisonous acid that has been used in the treatment of wood to prevent...
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Transcribed Image Text:Aniline (PhNH2, MM = 93.13 g/mol) is a weak base (pKa of PhNH3 = 4.600).
a) A 25.0 mL sample of a solution of aniline requires 25.67 mL of 0.175 M HCI to reach the equivalence point in a titration. What is the original concentration of the
aniline solution? Round your answer to the correct number of significant figures and enter it into the box below. If your answer is a decimal, include a 0 before the decimal
point. Do not use scientific notation.
concentration of aniline solution = type your answer...
M
b) What is the pH of the aniline solution before any titrant has been added? Round your answer to the correct number of significant figures and enter. it into the box
below. If your answer is a decimal, include a O before the decimal point. Do not use scientific notation.
pH= type your answer...
c) What is the pH of the solution after 7.00 mL of titrant have been added? Round your answer to the correct number of significant figures and enter it into the box below.
If your answer is a decimal, include a 0 before the decimal point. Do not use scientific notation.
pH= type your answer...
d) What is the pH at the equivalence point? Round your answer to the correct number of significant figures and enter it into the box below. If your answer is a decimal,
include a 0 before the decimal point. Do not use scientific notation.
pH=
type your answer...
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