Question 1

Refer to the energy diagrams for Reaction I and Reaction II. Which statement is INCORRECT regarding these reactions?

$$	ext{(See image 1)}$$

Accepted Answer

Reaction II occurs faster than Reaction I.

Question 2

The diagram shows a reaction where colored spheres are rearranged into new combinations. What type of reaction is illustrated?

$$	ext{(See image 2)}$$

Accepted Answer

Single displacement

Question 3

The following reaction is shown:

$$\mathrm{C$$_{15}$$H_{31}CO_2C$$_{30}H_{61} ightarrow $$C_{15}H$$_{31}$$CO_2H + HO{-}C$$_{30}$$H_{61}}$$

This equation represents a ________ reaction.

$$	ext{(See image 3)}$$

Accepted Answer

Hydrolysis

Question 4

Which of the following is an aldehyde functional group?

$$	ext{(See images 4, 5, 6, 7)}$$

Accepted Answer

Image 7

Question 5

Which of these molecules is an aldopentose?

$$	ext{(See images 8, 9, 10, 11)}$$

Accepted Answer

Image 8

Question 6

Which of the following is a pyranose ring?

$$	ext{(See image 12)}$$

Accepted Answer

II only

Question 7

What type of glycosidic bond is shown in the following disaccharide?

$$	ext{(See image 13)}$$

Accepted Answer

$$\beta(1\rightarrow4)$$

Question 8

The double bonds in this unsaturated triglyceride are:

$$	ext{(See image 14)}$$

Accepted Answer

Both cis

Question 9

Which of the following statements about intermolecular forces is true?

Accepted Answer

Dipole-dipole interactions occur between two polar molecules.

Question 10

Which of the following compounds cannot exhibit hydrogen bonding?

Accepted Answer

CH$$_4$$

Question 11

Which one of these molecules can act as a hydrogen bond acceptor but not a donor?

Accepted Answer

CH$$_3-O-CH$_3$$

Question 12

Which of the following compounds exhibits primarily dipole-dipole intermolecular forces between molecules?

Accepted Answer

CH$$_3-O-CH$_3$$

Question 13

The boiling points of alkanes increase with molar mass because of the increase in:

Accepted Answer

London dispersion forces

Question 14

Which of the following molecules is amphipathic?

Accepted Answer

CH$$_3(CH$_2$$)$$_{10}CO$_2H$$

Question 15

Which of the following is a typical chemical equation that represents a hydration reaction?

Accepted Answer

BaCl$$_2 (s$$) $$\rightarrow Ba$^{2+}(aq) + 2 Cl$^-(aq)$$

Question 16

What is the molarity of a solution formed by dissolving 45 g NaOH in water to give a final volume of 250 mL?

$$	ext{(Molar mass of NaOH = 40.0 g/mol)}$$

Accepted Answer

4.5 M

Question 17

A physiological saline solution has a concentration of 0.90 % m/v NaCl. Which of these solutions is hypotonic to the saline solution?

Accepted Answer

0.25 % m/v NaCl

Question 18

The transport of glucose molecules across a cell membrane occurs via:

Accepted Answer

Facilitated transport

Comprehensive Study Guide for GOB Chemistry Exam 2 (Ch. 5–8)

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