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Acid Strength, Base Strength and Anion Stability (16 Problems)

2. Select the strongest base:
a. OH-
b. SH -
c. NH2 -
d. Cl-
e. CH3CH2 -

3. Consider the following acid-based reaction. Equilibrium for this reaction lies on the:
(see attachment for equation)
a. Left
b. Right
c. It cannot be determined

4. Rank the following compounds in order of increasing acidity:
1. BrCH2OH
2. CH3NH2
3. CH3OH

a. 1<2<3
b. 2<3<1
c. 3<2<1
d. 3<1<2
e. 2<1<3

5. Rank the acidity of the labeled protons in the following molecule from lowest to highest acidity:
(see attachment for molecular formula)
a. Ha<Hb<Hc
b. Hb<Hc<Ha
c. Hc<Ha<Hb
d. Hb<Ha<Hc
e. Hc<Hb<Ha

6. Consider the following molecule having three labelled protons, Ha, Hb, and Hc. Rank these protons in order of increasing acidity:
(see attachment)
a. Ha>Hb>Hc
b. Hb>Hc>Ha
c. Hc>Ha>Hb
d. Hb>Ha>Hc
e. Hc>Hb>Ha

7. List the following compounds in the order of increasing acidity:
a. CH3CH2CH3
b. CH3COOH
c. CH3OH
d. FCH2COOH

A. A>B>C>D
B. A>C>B>D
C. B>C>B>D
D. D>C>A>B
E. A>C>D>B

8. What is the stronger acid?
(see attachment for molecule)
a. A
B. B

9. Which is the stronger acid?
A. F3COOH
B. H3COOH

a. A
b. B

11. Which of the following species is the strongest base?
a. CH3-
b. NH2 -
c. Cl -
d. OH -
e. I -

12. Which compound is the strongest base?
A. CH3COO-
B. CH3CH2O -
C. CH3CClHO-

a. A
b. B
c. C

13. Which of the following species is the strongest base?
a. NH2 -
b. OH-
c. Cl -
d. NH3
e. I -

14. Which compound is the strongest base?
a. HCOO-
b. CH3CH2CH3O-
c. CH3CHBrO-

a. A
b. B
c. C

17. Which is the electrophilic site in the following compounds?
a. CH3Cl
b. H2COCH3
c. BH3

a. A: chlorine, B: carbon, C: boron
b. A: carbon, B:carbon, C:boron
c. A:carbon, B:oxygen, C:boron
d. A: carbon, B: carbon, C: hydrogen
e. A: carbon, B:oxygen, C: hydrogen

18. What is the nucleophilic site in each of the following molecules?
a. H3COCH3
b H2NCH3
c. H2CCH2

a. A: hydrogen, B: nitrogen, C: pi electrons in bond
b. A: oxygen, B: nitrogen, C: carbon
c. A: oxygen, B: nitrogen, C: pi electrons in bond
d. A: oxygen, B: carbon, C: pi electrons in bond
e. A: carbon, B:nitrogen, C: hydrogen

19. Does the equilibrium of this reaction lie to the left or right?
(see attachment)
a. Left
b. Right
c. It cannot be determined

20. Which is the strongest base?
a. NH3
b. NH2-
c. OH -
d. H+

Attachments

Solution Summary

This solution shows the answers and reasoning for 16 questions about acid strength, base strength and anion stability. Reasoning includes details regarding resonance and electronegativity.

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