Electrochemistry REVIEW 101

Define oxidation in terms of electron transfer.

• Oxidation is the gain of electrons.

• Oxidation is the loss of protons.

• Oxidation is the loss of electrons.

• Oxidation is the transfer of neutrons.

Define reduction in terms of electron transfer.

• Reduction is the loss of electrons.

• Reduction is the gain of protons.

• Reduction is the gain of electrons.

• Reduction is the transfer of neutrons.

What is the oxidation number of Fe in FeO?

• +1

• +2

• +3

• 0

What are examples of reduction in electrochemical reactions?

• I and II

• I and III

• II and IV

• III and IV

What is electrolysis?

• Electrolysis is the process of using electrical energy to drive a non-spontaneous chemical reaction.

• Electrolysis is the process of using heat to drive a spontaneous chemical reaction.

• Electrolysis is the process of separating mixtures using mechanical means.

• Electrolysis is the process of combining elements to form a compound.

What is the role of the anode in an electrochemical cell?

• The anode is the electrode where reduction occurs.

• The anode is the electrode where oxidation occurs.

• The anode is the electrode that stores energy.

• The anode is the electrode that conducts electricity.

What is a redox reaction?

• A reaction that involves the transfer of protons between two species.

• A chemical reaction involving the transfer of electrons between two species.

• A reaction that only occurs in acidic solutions.

• A process that involves the absorption of light energy.

What type of reactions occur in voltaic cells?

• Endothermic, acid-base reactions

• Spontaneous, redox reactions

• Exothermic, decomposition reactions

• Non-spontaneous, synthesis reactions

What is the Nernst equation used for?

• To calculate the cell potential of an electrochemical cell under non-standard conditions.

• To determine the concentration of reactants in a chemical reaction.

• To measure the temperature of a chemical solution.

• To calculate the rate of a chemical reaction.

What type of battery uses electricity from an external source to restore the active material to its original or charged condition?

• Primary cell battery

• Secondary cell battery

• Zinc-carbon battery

• Alkaline battery