Question 1

Which of the following compounds cannot be reduced by a typical reducing agent such as $$\mathrm{H_2$}$$ and $$\mathrm{Pt}$$?

Accepted Answer

2,4-dimethylpentane

Question 2

What is the product when butanal is reduced using $$\mathrm{H_2$}$$ and $$\mathrm{Pt}$$?

Accepted Answer

1-butanol

Question 3

Which functional group is reduced to a primary alcohol in the presence of $$\mathrm{H_2$}$$ and $$\mathrm{Pt}$$?

Accepted Answer

Aldehyde

Question 4

A ketone reacts with $$\mathrm{H_2$}$$ and $$\mathrm{Pt} to $$form which type of alcohol?

Accepted Answer

Secondary alcohol

Question 5

Which of the following is the correct balanced equation for the reduction of acetone ($$\mathrm{CH_3COCH_3}) $$with $$\mathrm{H_2$}$$ and $$\mathrm{Pt}$$?

Accepted Answer

$$\mathrm{CH_3COCH_3} + \mathrm{H_2$} \xrightarrow{Pt} \mathrm{CH_3CHOHCH_3}$$

Question 6

A patient is exposed to a reducing agent in a medical setting. Which of the following carbonyl-containing drugs could be converted to a less toxic alcohol form?

Accepted Answer

An aldehyde-based drug

Question 7

Which reagent is commonly used to reduce aldehydes and ketones to alcohols in laboratory and industrial settings?

Accepted Answer

$$\mathrm{H_2$}$$ with $$\mathrm{Pt}$$ catalyst

Question 8

In the reduction of 2-pentanone, what is the major product?

Accepted Answer

2-pentanol

Question 9

Which of the following statements about the reduction of aldehydes and ketones is TRUE?

Accepted Answer

Aldehydes are reduced to primary alcohols, and ketones to secondary alcohols.

Question 10

A chemist wants to synthesize 3-pentanol. Which starting material and reaction conditions should be used?

Accepted Answer

Reduce 3-pentanone with $$\mathrm{H_2$}$$ and $$\mathrm{Pt}$$

Question 11

Which alcohol is formed when benzaldehyde is reduced with $$\mathrm{H_2$}$$ and $$\mathrm{Pt}$$?

Accepted Answer

Benzyl alcohol ($$\mathrm{C_6H_5CH_2OH})$$

Question 12

Which of the following is NOT a product of the reduction of a ketone?

Accepted Answer

Primary alcohol

Question 13

A student reduces 2-butanone with $$\mathrm{H_2$}$$ and $$\mathrm{Pt}. $$What is the structure of the product?

Accepted Answer

$$\mathrm{CH_3CH(OH)CH_2CH_3}$$

Question 14

Which of the following best describes the role of the catalyst in the reduction of aldehydes and ketones?

Accepted Answer

It increases the rate of hydrogen addition to the carbonyl group.

Question 15

During the reduction of a carbonyl compound, which bond is formed?

Accepted Answer

$$\mathrm{C-H}$$ bond

Question 16

Which of the following is a necessary condition for the reduction of a ketone to occur?

Accepted Answer

Presence of a reducing agent and a catalyst

Question 17

A laboratory technician wants to produce 2-propanol. Which starting material should be used?

Accepted Answer

Acetone ($$\mathrm{CH_3COCH_3})$$

Question 18

Which of the following is the correct product when 3-hexanone is reduced?

Accepted Answer

3-hexanol

Question 19

A student is given the following reaction: $$\mathrm{CH_3CH_2COCH_2CH_3} + \mathrm{H_2$} \xrightarrow{Pt} \ ? $$ What is the product?

Accepted Answer

$$\mathrm{CH_3CH_2CH(OH)CH_2CH_3}$$

Question 20

Which of the following statements best explains why 2,4-dimethylpentane cannot be reduced by $$\mathrm{H_2$}$$ and $$\mathrm{Pt}$$?

Accepted Answer

It does not contain a carbonyl group.

Reduction of Aldehydes and Ketones: Mechanisms and Applications

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