Electrochemistry: Redox Reactions

What is the process in which one species loses electrons and another gains electrons?

• Oxidation-reduction (redox) reaction

• Subtraction-addition reaction

• Increase-decrease reaction

• Division-multiplication reaction

In a redox reaction, the species that loses electrons is called?

• Oxidizing agent

• Electron acceptor

• Redox catalyst

• Reducing agent

What is the name of the species that gains electrons in a redox reaction?

• Anion

• Oxidizing agent

• Proton donor

• Reducing agent

What is the oxidation state of an element in its elemental form?

• 1

• -1

• 0

• 2

Identify the oxidizing agent in the following reaction: 2Fe + 3Cl2 -> 2FeCl3

• Fe2Cl3

• Fe

• FeCl3

• Cl2

In a redox reaction, what is the reducing agent?

• The reducing agent is the substance that gets reduced.

• The reducing agent is the substance that gains electrons.

• The reducing agent is the substance that remains unchanged.

• The reducing agent is the substance that gets oxidized.

What is the oxidation number of oxygen in most compounds?

• 0

• +1

• -2

• -1

Balance the following redox reaction: Fe2O3 + CO -> Fe + CO2

• Fe2O3 + 4CO -> 2Fe + 4CO2

• Fe2O3 + 3CO -> 2Fe + 3CO2

• Fe2O3 + 2CO -> 2Fe + 2CO2

• Fe2O3 + CO -> Fe + 2CO2

What is the standard electrode potential of hydrogen?

• 2 volts

• 1 volt

• -1 volt

• 0 volts

What is the name of the electrode where reduction occurs in an electrochemical cell?

• positive electrode

• anion

• cathode

• anode