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Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
Publisher:Skoog
Chapter14: Principles Of Neutralization Titrations
Section: Chapter Questions
Problem 14.33QAP
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10:13
LTE D
AA
ikamva.uwc.ac.za
d) 1.3 M
e) none of these
Question 19
In a solution prepared by dissolving 0.100 mole of
propanoic acid in enough water to make 1.00 L of
solution, the pH is observed to be 2.945. The K, for
propanoic acid (HC,H,02) is
а) 1.14
b) 1.30
c) 1.15
d) 7.67
e) none of these
Question 20
Calculate the percentage of pyridine (C,H,N) that
forms pyridinium ion, C;H,N*, in a 0.89 M aqueous
solution of pyridine (K, 1.7 ).
а) 1.7 %
b) 3.9 %
c) 1.9 %
d) 4.9 %
e) 4.4 %
Question 21
A 0.28 mol sample of diprotic acid, H,A, is dissolved in
250 mL of water. The K, of this acid is 1.0 and K2 is
1.0. Calculate the concentration of A?- in this solution.
а) 1.0 М
b) 1.7 М
с) 3.3 М
d) 1.0 M
e) 1.12 M
Transcribed Image Text:10:13 LTE D AA ikamva.uwc.ac.za d) 1.3 M e) none of these Question 19 In a solution prepared by dissolving 0.100 mole of propanoic acid in enough water to make 1.00 L of solution, the pH is observed to be 2.945. The K, for propanoic acid (HC,H,02) is а) 1.14 b) 1.30 c) 1.15 d) 7.67 e) none of these Question 20 Calculate the percentage of pyridine (C,H,N) that forms pyridinium ion, C;H,N*, in a 0.89 M aqueous solution of pyridine (K, 1.7 ). а) 1.7 % b) 3.9 % c) 1.9 % d) 4.9 % e) 4.4 % Question 21 A 0.28 mol sample of diprotic acid, H,A, is dissolved in 250 mL of water. The K, of this acid is 1.0 and K2 is 1.0. Calculate the concentration of A?- in this solution. а) 1.0 М b) 1.7 М с) 3.3 М d) 1.0 M e) 1.12 M
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