Question

5 Chem Multiple Choice questions?

1. Consider the following reaction: Zn (s) + Cu2+ (aq) Zn2+ (aq) + Cu (s). Which of the following gets oxidized?

(Points : 1)

Zn (s)

Cu2+ (aq)

Zn2+ (aq)

Cu (s)

2. Which statement best describes the flow of electrons in a voltaic or galvanic cell?

(Points : 1)

Electrons flow from the reduction site to the oxidation site through the solution.

Electrons flow from the reduction site to the oxidation site through the wire.

Electrons flow from the oxidation site to the reduction site through the wire.

Electrons flow from the oxidation site to the reduction site through the solution.

3. Which of the following happens in an electrolytic cell?

(Points : 1)

Electricity drives a nonspontaneous oxidation-reduction reaction.

A nonspontaneous oxidation-reduction reaction creates electricity.

A spontaneous oxidation-reduction reaction consumes electricity.

Electricity drives a spontaneous oxidation-reduction reaction.

4. Which of the following devices would be used to coat an aluminum chain with a thin layer of gold?

(Points : 1)

ammonium nitrate

voltaic cell

electrolytic cell

galvanic cell

5. Which of the following types of chemical reactions is necessary for electrochemical processes?

(Points : 1)

synthesis

redox

combustion

decomposition

Answers

1. Consider the following reaction: Zn (s) + Cu^2 (aq) --> Zn^2+ (aq) + Cu (s).

Which of the following gets oxidized?

Correct answer - Zn (s)

2. Which statement best describes the flow of electrons in a voltaic or galvanic cell?

Correct answer - Electrons flow from the oxidation site to the reduction site through the wire.

3. Which of the following happens in an electrolytic cell?

Correct answer - Electricity drives a nonspontaneous oxidation-reduction reaction.

4. Which of the following devices would be used to coat an aluminum chain with a thin layer of gold?

Correct answer - electrolytic cell

5. Which of the following types of chemical reactions is necessary for electrochemical processes?

Correct answer - redox

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