4. You may need Table 7.2 (pg 202) or Appendix 5 (A22) in your textbook to answer the following questions. Only legible answers that fit in the box(es) will be considered. a. Which is the stronger base, Cl or H₂O? Assume CI is the conjugate base of HCI. b. Which is the stronger base, H₂O or NO₂ c. Which is the stronger base, CN or OC6H5?
4. You may need Table 7.2 (pg 202) or Appendix 5 (A22) in your textbook to answer the following questions. Only legible answers that fit in the box(es) will be considered. a. Which is the stronger base, Cl or H₂O? Assume CI is the conjugate base of HCI. b. Which is the stronger base, H₂O or NO₂ c. Which is the stronger base, CN or OC6H5?
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
Transcribed Image Text:6: Acids and Bases
4. You may need Table 7.2 (pg 202) or Appendix 5 (A22) in your textbook to answer
the following questions. Only legible answers that fit in the box(es) will be
considered.
a. Which is the stronger base, Cl or H₂O? Assume Cl- is the conjugate base of HCI.
b. Which is the stronger base, H₂O or NO₂
c. Which is the stronger base, CN- or OC6H5?
![Table 7.2
Values of K₂ for Some Common Monoprotic Acids b
Formula
Name
HSO4
HClO2
HC₂H₂CIO₂
HF
HNO₂
HC₂H302
[Al(H₂O)6]3+
HOCI
HCN
NH4+
HOC6H5
Hydrogen sulfate ion
Chlorous acid
Madis
Monochloracetic acid
Hydrofluoric acid
Nitrous acid
Acetic acid
Hydrated aluminum(III) ion
Hypochlorous acid
Hydrocyanic acid
Ammonium ion
Phenol
Value of K₂
1.2 x 10-2
1.2 x 10-2
1.35 × 10-3
7.2 x 10-4
4.0 × 10-4
1.8 x 10-5
1.4 x 10-5
3.5 × 10-8
6.2 X 10-10
5.6 × 10-10
1.6 × 10-10
Weakest bases
INTERACTIVE EXAMPLE 7.1
Relative Base Strength
Using Table 7.2, arrange the following species according to their strength as
bases: H₂O, F-, Cl-, NO₂, and CN-.
Solution Remember that water is a stronger base than the conjugate base of
strong acid but a weaker base than the conjugate base of a weak acid. This rull
leads to the following order:
Cl- <H₂O < conjugate bases of weak acids
Strongest bases
Increasing acid strength
We can order the remaining conjugate bases by recognizing that the streng
of an acid is inversely related to the strength of its conjugate base. From Tab
7.2 we have
Ka for HF > K₂ for HNO₂ > Ka for HCN
Thus the base strengths increase as follows:](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2af39711-f9cc-45d1-8823-e5c52f0219bd%2F2f77cecf-454d-429c-9140-d5cb081249c9%2F6ebzkgc_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Table 7.2
Values of K₂ for Some Common Monoprotic Acids b
Formula
Name
HSO4
HClO2
HC₂H₂CIO₂
HF
HNO₂
HC₂H302
[Al(H₂O)6]3+
HOCI
HCN
NH4+
HOC6H5
Hydrogen sulfate ion
Chlorous acid
Madis
Monochloracetic acid
Hydrofluoric acid
Nitrous acid
Acetic acid
Hydrated aluminum(III) ion
Hypochlorous acid
Hydrocyanic acid
Ammonium ion
Phenol
Value of K₂
1.2 x 10-2
1.2 x 10-2
1.35 × 10-3
7.2 x 10-4
4.0 × 10-4
1.8 x 10-5
1.4 x 10-5
3.5 × 10-8
6.2 X 10-10
5.6 × 10-10
1.6 × 10-10
Weakest bases
INTERACTIVE EXAMPLE 7.1
Relative Base Strength
Using Table 7.2, arrange the following species according to their strength as
bases: H₂O, F-, Cl-, NO₂, and CN-.
Solution Remember that water is a stronger base than the conjugate base of
strong acid but a weaker base than the conjugate base of a weak acid. This rull
leads to the following order:
Cl- <H₂O < conjugate bases of weak acids
Strongest bases
Increasing acid strength
We can order the remaining conjugate bases by recognizing that the streng
of an acid is inversely related to the strength of its conjugate base. From Tab
7.2 we have
Ka for HF > K₂ for HNO₂ > Ka for HCN
Thus the base strengths increase as follows:
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