The weak acids that are found in plant tannins can be used to change the protein fibres in animal hides and make them resistant to decay. Below is a list of two of these weak acids and their Ka values. Row A. B. C. D. Weak Acid Catechinic acid Gallic acid 40. The strongest acid is i OCI (aq), in a reaction that favours the reactants is and the acid that will react with hypochlorite ions, The statement above is completed by the information in row i gallic acid gallic acid Ka 1.0 × 10-⁹ 4.6 × 10-3 catechinic acid catechinic acid ii gallic acid catechinic acid gallic acid catechinic acid

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 82AP
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Use the following information to answer question 40.
The weak acids that are found in plant tannins can be used to change the protein fibres
animal hides and make them resistant to decay. Below is a list of two of these weak acids
and their Ką values.
40. The strongest acid is
i and the acid that will react with hypochlorite ions,
OCI (aq), in a reaction that favours the reactants is
ii
The statement above is completed by the information in row
Row
A.
B.
C.
D.
Weak Acid
Catechinic acid
Gallic acid
i
gallic acid
gallic acid
K₂
1.0 × 10-⁹
4.6 × 10-³
catechinic acid
catechinic acid
D.
ii
gallic acid
catechinic acid
gallic acid
catechinic acid
broos)
41. Which of the following statements accurately compares the properties of a 0.10 mol/L
solution of ethanoic acid and a 0.10 mol/L solution of benzoic acid?
A.
The K, for the conjugate base of the ethanoic acid solution would be lower than the
K for the conjugate base of the benzoic acid solution.
B.
The pOH of the ethanoic acid solution would be lower than the pOH of the benzoic
acid solution.
C. The pH of the ethanoic acid solution would be lower than the pH of the benzoic acid
solution.
The [H3O+ (aq)] of the ethanoic acid solution would be higher than the [H3O*+ (aq)] of
the benzoic acid solution.
Transcribed Image Text:Use the following information to answer question 40. The weak acids that are found in plant tannins can be used to change the protein fibres animal hides and make them resistant to decay. Below is a list of two of these weak acids and their Ką values. 40. The strongest acid is i and the acid that will react with hypochlorite ions, OCI (aq), in a reaction that favours the reactants is ii The statement above is completed by the information in row Row A. B. C. D. Weak Acid Catechinic acid Gallic acid i gallic acid gallic acid K₂ 1.0 × 10-⁹ 4.6 × 10-³ catechinic acid catechinic acid D. ii gallic acid catechinic acid gallic acid catechinic acid broos) 41. Which of the following statements accurately compares the properties of a 0.10 mol/L solution of ethanoic acid and a 0.10 mol/L solution of benzoic acid? A. The K, for the conjugate base of the ethanoic acid solution would be lower than the K for the conjugate base of the benzoic acid solution. B. The pOH of the ethanoic acid solution would be lower than the pOH of the benzoic acid solution. C. The pH of the ethanoic acid solution would be lower than the pH of the benzoic acid solution. The [H3O+ (aq)] of the ethanoic acid solution would be higher than the [H3O*+ (aq)] of the benzoic acid solution.
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