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Chapter 9 - Redox Review HL

Authored by Kathryn Allen

Chemistry

11th - 12th Grade

Used 4+ times

Chapter 9 - Redox Review HL
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25 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A particular voltaic cell is made from magnesium and iron half-cells. The overall equation for the reaction occurring in the cell is Mg(s) + Fe2+(aq) → Mg2+(aq) + Fe(s)

Which statement is correct when the cell produces electricity?

Magnesium atoms lose electrons

The mass of the iron electrode decreases

Electrons flow from the iron half-cell to the magnesium half-cell

Negative ions flow through the salt bridge from the magnesium half-cell to the iron half-cell

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which statement is correct about the value of Eθ?

The more positive the value the greater the driving force for reduction

The more negative the value the greater the driving force for reduction

The more positive the value the greater the rate of reaction

The more negative the value the greater the rate of reaction

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Consider the following reaction: H2SO3(aq) + Sn4+(aq) + H2O(l) → Sn2+(aq) + HSO4-(aq) + 3H+(aq)

Which statement is correct?

H2SO3 is the reducing agent because it undergoes reduction

H2SO3 is the reducing agent because it undergoes oxidation

Sn4+ is the oxidizing agent because it undergoes oxidation

Sn4+ is the oxidizing agent because it undergoes reduction

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which equation represents the reduction process occurring in the standard hydrogen electrode?

H2(g) → 2H+(aq) + 2e-

H+(aq) + OH-(aq) → H2O(l)

2H+(aq) + 2e- → H2(g)

O2(g) + 4H+(aq) + 4e- → 2H2O(l)

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which processes occur during the electrolysis of molten sodium chloride?

I. Sodium and chloride ions move through the electrolyte II. Electrons move through the external circuit III. Oxidation takes place at the anode

I and II only

I and III only

II and III only

I, II, and III

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What process occurs at the cathode in a voltaic cell and at the anode in an electrolytic cell?

Oxidation occurs at a voltaic cell cathode and reduction occurs at an electrolytic cell anode

Oxidation occurs at both the cathode in a voltaic cell and anode in an electrolytic cell

Reduction occurs at a voltaic cell cathode and oxidation occurs at an electrolytic cell anode

Reduction occurs at both the cathode in a voltaic cell and anode in an electrolytic cell

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which definition of oxidation is correct?

Loss of electrons and a decrease in oxidation number

Loss of electrons and an increase in oxidation number

Gain of electrons and a decrease in oxidation number

Gain of electrons and an increase in oxidation number

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