Question 1

Which of the following correctly represents the condensed structural formula for butane?

Accepted Answer

$$\mathrm{CH_3CH_2CH_2CH_3}$$

Question 2

Which statement best explains why alkanes are generally insoluble in water?

Accepted Answer

Alkanes are nonpolar and water is polar, so they do not mix.

Question 3

Which of the following is the correct IUPAC name for the compound shown below?

$$\mathrm{CH_3CH_2CH(CH_3$)CH_2CH_3}$$

Accepted Answer

3-Methylpentane

Question 4

A patient is exposed to ethylene ($$\mathrm{C_2H_4}) $$gas. Which type of reaction will most likely occur if ethylene is treated with hydrogen gas ($$\mathrm{H_2$}) in $$the presence of a nickel catalyst?

Accepted Answer

Hydrogenation, producing ethane ($$\mathrm{C_2H_6})$$

Question 5

Which reagent would you use to test for the presence of an alkene in a solution?

Accepted Answer

Bromine water ($$\mathrm{Br_2$})$$

Question 6

Which of the following alcohols is classified as tertiary?

Accepted Answer

$$\mathrm{2-methyl-2-propanol}$$

Question 7

A solution contains 1-butanol. Which product is formed when it is oxidized using potassium dichromate ($$\mathrm{K_2Cr_2O_7}) $$under acidic conditions?

Accepted Answer

Butanoic acid ($$\mathrm{CH_3CH_2CH_2COOH})$$

Question 8

Which of the following statements about the solubility of alcohols in water is correct?

Accepted Answer

Alcohols with shorter carbon chains are more soluble in water.

Question 9

Which of the following is the correct Fischer projection for D-glucose?

Accepted Answer

The hydroxyl group on the fifth carbon is on the right.

Question 10

Which of the following best describes the difference between an aldose and a ketose?

Accepted Answer

An aldose has an aldehyde group; a ketose has a ketone group.

Question 11

Which of the following reactions is used to convert a primary alcohol to a carboxylic acid?

Accepted Answer

Oxidation

Question 12

A patient is given a medication containing benzoic acid. What is the correct condensed structural formula for benzoic acid?

Accepted Answer

$$\mathrm{C_6H_5COOH}$$

Question 13

Which of the following is the correct product when acetic acid reacts with ethanol in the presence of sulfuric acid?

Accepted Answer

Ethyl acetate ($$\mathrm{CH_3COOCH_2CH_3})$$

Question 14

Which of the following is a disaccharide formed by an $$\alpha-1$$,4 glycosidic linkage?

Accepted Answer

Maltose

Question 15

Which reagent is commonly used to oxidize a secondary alcohol to a ketone?

Accepted Answer

Potassium dichromate ($$\mathrm{K_2Cr_2O_7})$$

Question 16

Which of the following is the correct definition of a dehydration synthesis reaction?

Accepted Answer

A reaction in which two molecules combine to form a larger molecule and water is released.

Question 17

Which of the following is the correct IUPAC name for the compound $$\mathrm{CH_3COCH_3}$$?

Accepted Answer

Propanone

Question 18

Which of the following statements about cellulose is correct?

Accepted Answer

Cellulose is a polysaccharide composed of $$\beta-D-$$glucose units linked by $$\beta-1$$,4 glycosidic bonds.

Question 19

Which of the following is the correct product when a carboxylic acid reacts with a strong base such as sodium hydroxide ($$\mathrm{NaOH}$$)?

Accepted Answer

A carboxylate salt and water

Organic Chemistry and Biomolecules: Key Concepts and Study Guide (Chapters 11–14)

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