Question 1

Which statement best describes oxidation in an inorganic redox reaction?

Accepted Answer

It is the loss of electrons by an atom or ion.

Question 2

In the reaction $$4Fe(s) + 3O_2(g) \rightarrow 2Fe_2O_3(s)$$, what is the oxidation number of iron in $$Fe_2O_3$$?

Accepted Answer

$$+3$$

Question 3

Which of the following is the correct order for assigning oxidation states in a compound?

Accepted Answer

Cations/anions with known charges, transition metals, molecules/polyatomic ions, hydrogen, oxygen, halogens, everything else

Question 4

Which of the following best describes a condensation reaction?

Accepted Answer

A reaction in which water is produced as two organic molecules are joined.

Question 5

During the hydrogenation of an alkene, what is the major chemical change that occurs?

Accepted Answer

A double bond is converted to a single bond by the addition of hydrogen atoms.

Question 6

Which of the following is true about Markovnikov’s rule in the hydration of alkenes?

Accepted Answer

The hydrogen atom adds to the carbon with more hydrogens, and the hydroxyl group adds to the carbon with more alkyl groups.

Question 7

Which molecule is reduced in the following reaction: $$Fe(s) + Cu$$^{2+}$$(aq) \rightarrow Fe$$^{2+}$$(aq) + Cu(s)$$?

Accepted Answer

$$Cu^{2+}$$

Question 8

Which of the following is a hydrolyzable lipid?

Accepted Answer

Waxes

Question 9

In biological redox reactions, which molecule acts as an electron carrier and is reduced to $$NADH$$?

Accepted Answer

$$NAD^+$$

Question 10

Which of the following is the correct balanced equation for the combustion of glucose ($$C_6H_{12}O_6$)?

Accepted Answer

$$C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O$$

Question 11

Which of the following is NOT a property of soluble dietary fiber?

Accepted Answer

It adds bulk to the diet and has a laxative effect.

Question 12

Which of the following is true about the oxidation of ethanol in the body?

Accepted Answer

NAD+ is reduced to NADH.

Question 13

Which of the following is the correct oxidation number for sulfur in $$SO_4$$^{2-}$$?

Accepted Answer

$$+6$$

Question 14

Which of the following is a product of the hydrolysis of a fat?

Accepted Answer

Glycerol and fatty acids

Question 15

Which of the following statements about enzymes is correct?

Accepted Answer

Enzymes are biological catalysts that speed up chemical reactions.

Question 16

Which of the following is an example of an organic reduction reaction?

Accepted Answer

Conversion of an aldehyde to an alcohol

Question 17

Which of the following is true about nonhydrolyzable lipids?

Accepted Answer

They do not contain ester functional groups.

Question 18

Which of the following best describes the role of phosphorylation in cells?

Accepted Answer

It is a condensation reaction that adds a phosphate group.

Question 19

Which of the following is a correct statement about polysaccharides?

Accepted Answer

They are large molecules made of many monosaccharide units.

Question 20

Which of the following is a correct example of a synthesis reaction?

Accepted Answer

$$2H_2 + O_2$ \rightarrow 2H_2O$$

Chapter 5: Redox, Hydrolysis, and Addition Reactions – Study Notes

Guida di studio - Domande di pratica