Question 1

Which of the following correctly identifies the functional group present in the molecule with the condensed formula CH3CH2OCH3?

Accepted Answer

Ether

Question 2

Which of the following statements about bond length and bond strength is correct?

Accepted Answer

A double bond is shorter and stronger than a single bond.

Question 3

Which of the following is the correct IUPAC name for the compound with the structure $$\mathrm{CH_3CH_2CH_2Br}$$?

Accepted Answer

1-bromopropane

Question 4

Which of the following molecules is chiral?

Accepted Answer

2-butanol

Question 5

A fatty acid is described as 18:2(Δ9,12). Which of the following statements is true?

Accepted Answer

It is a polyunsaturated fatty acid with 18 carbons and double bonds at carbons 9 and 12.

Question 6

Which of the following best describes an exothermic reaction?

Accepted Answer

A reaction where $$\Delta H is $$negative and heat is released.

Question 7

Which of the following changes will increase the rate of a chemical reaction?

Accepted Answer

Adding a catalyst

Question 8

Which of the following is a correct classification for the reaction: $$\mathrm{C_6H_{12}O_6$} + 6\mathrm{O_2$} \rightarrow 6\mathrm{CO_2$} + 6\mathrm{H_2O}$$?

Accepted Answer

Combustion

Question 9

Which of the following best describes a primary alcohol?

Accepted Answer

An alcohol where the carbon bonded to the OH group is attached to one other carbon.

Question 10

Which of the following is a reducing sugar?

Accepted Answer

Glucose

Question 11

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

Accepted Answer

An aldose contains an aldehyde group, while a ketose contains a ketone group.

Question 12

Which of the following statements about amylose and cellulose is correct?

Accepted Answer

Amylose has $$\alpha(1 \rightarrow 4)$$ bonds, while cellulose has $$\beta(1 \rightarrow 4)$$ bonds.

Question 13

Which of the following best describes the universal donor blood type and the reason for this property?

Accepted Answer

Type O, because it lacks A and B antigens on its oligosaccharides.

Question 14

Which of the following is the correct classification for the reaction: $$\mathrm{CH_2$=CH_2$} + \mathrm{H_2O} \rightarrow \mathrm{CH_3CH_2OH}$$?

Accepted Answer

Hydration (addition)

Question 15

Which of the following best describes a structural isomer?

Accepted Answer

Molecules with the same molecular formula but different connectivity of atoms.

Question 16

A gas is contained in a cylinder at constant temperature. If the pressure is doubled, what happens to the volume according to Boyle’s Law?

Accepted Answer

The volume is halved.

Question 17

Which of the following best describes the anomeric carbon in a cyclic monosaccharide?

Accepted Answer

The carbon that was the carbonyl carbon in the Fischer projection.

Question 18

Which of the following is true about the spontaneity of a reaction with $$\Delta G = +$$?

Accepted Answer

The reaction is non-spontaneous.

Question 19

Which of the following best describes the difference between cis and trans isomers in alkenes?

Accepted Answer

Cis isomers have substituents on the same side of the double bond; trans isomers have them on opposite sides.

Question 20

Which of the following best describes the role of heparin in the human body?

Accepted Answer

Heparin is an anticoagulant that prevents blood clotting.

General Chemistry: Organic Molecules, Thermochemistry, Carbohydrates, and Gas Laws

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