Question 1

Which of the following statements correctly describes the difference between a saturated and an unsaturated fatty acid?

Accepted Answer

A saturated fatty acid contains only single bonds between carbon atoms, while an unsaturated fatty acid contains at least one double bond between carbon atoms.

Question 2

Which of the following is the correct IUPAC name for the compound with the condensed formula $$\mathrm{CH_3CH_2CH_2CH_2Cl}$$?

Accepted Answer

1-chlorobutane

Question 3

Which of the following best describes the physical effect of cis double bonds in naturally occurring unsaturated fatty acids?

Accepted Answer

They introduce kinks in the hydrocarbon chain, preventing tight packing and lowering the melting point.

Question 4

Which of the following is a structural isomer of $$\mathrm{C_4H_{10}}$$?

Accepted Answer

2-methylpropane

Question 5

A reaction has $$\Delta H = -150\ \mathrm{kJ}$$ and $$\Delta S = +200\ \mathrm{J/K}. At$$ $$T = 298\ \mathrm{K}$$, what is the sign of $$\Delta G$$ and what type of reaction is this?

Accepted Answer

$$\Delta G is $$negative; the reaction is exergonic.

Question 6

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

Accepted Answer

Increasing the temperature

Question 7

Which of the following best describes a hydrolysis reaction?

Accepted Answer

A reaction in which water is used to break a bond in a molecule, splitting it into two smaller molecules.

Question 8

In the combustion of propane ($$\mathrm{C_3H_8}$$), what are the products?

Accepted Answer

$$\mathrm{CO_2$}$$ and $$\mathrm{H_2O}$$

Question 9

Which of the following is the correct classification for the carbohydrate with the structure $$\mathrm{C_6H_{12}O_6$}$$ and an aldehyde functional group?

Accepted Answer

Aldohexose

Question 10

Which of the following is a correct statement about the glycosidic bond in maltose?

Accepted Answer

It is an $$\alpha-1$$,4-glycosidic bond between two glucose units.

Question 11

Which of the following is the correct classification for the alcohol group in 2-propanol ($$\mathrm{CH_3CHOHCH_3}$$)?

Accepted Answer

Secondary alcohol

Question 12

How many stereoisomers are possible for a carbohydrate with 3 chiral centers?

Accepted Answer

8

Question 13

Which of the following best describes an exothermic reaction?

Accepted Answer

A reaction that releases heat to the surroundings ($$\Delta H \u003c 0)$$

Question 14

Which of the following is the correct product of the hydrogenation of ethene ($$\mathrm{C_2H_4}$$)?

Accepted Answer

Ethane ($$\mathrm{C_2H_6})$$

Question 15

Which of the following is a correct statement about D- and L-glucose?

Accepted Answer

They are enantiomers, differing in the configuration at every chiral center.

Question 16

In a redox reaction, which of the following statements is correct?

Accepted Answer

The substance that is oxidized loses electrons and acts as the reducing agent.

Question 17

Which of the following best describes a condensation reaction?

Accepted Answer

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

Question 18

Which of the following is a correct statement about the ring form of glucose?

Accepted Answer

The $$\alpha$$ and $$\beta$$ anomers differ in the configuration at the anomeric carbon.

Question 19

Which of the following is a correct classification for cellulose?

Accepted Answer

Polysaccharide

Exam 2 Study Guide: Organic Compounds, Chemical Reactions, and Carbohydrates

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