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Specific and General Acid Catalysis - Part 1

Total questions: 11

Worksheet time: 6mins

Name
Class
Date
1.

The graph shows the reaction pathway catalyzed by acetic acid, CH3COOH. Choose the correct statement/s.

a)

This is a two stage reaction.

b)

Proton transfer occurs in a slow, rate determining step.

c)

Acetic acid is a weaker acid.

d)

The protonated substrate reacts further to give the product(s) in the (slow) rate determining step.

2.

Most ketones are almost 100% in the enol form.

a)

True

b)

False

3.

Acid-base catalysis often involves proton transfer.

a)

True

b)

False

4.

The structure of the compounds below after the movement of an a hydrogen and the shifting of bonding electrons in keto-enol tautomerism is

a)
b)
c)
d)
5.

In acid catalyzed ester hydrolysis, the acid catalyze two slow steps.

a)

True

b)

False

6.

Rate of proton transfer to N, O and S is slow hence it is diffusion-controlled.

a)

True

b)

False

7.

Carbon acid has high acidity.

a)

True

b)

False

8.

Oxygen acid has low acidity.

a)

True

b)

False

9.

The rate of the reaction for the hydrolysis of esters is slowest at pH 7.

a)

True

b)

False

10.

The graph shows the plot of a reaction catalyzed by hydrochloric acid.

a)

True

b)

False

11.

Bonus question: The mechanism drawn by Dr. Sheela is extremely messy.

a)

True

b)

False