CHE 1221 - Electrochemistry

Front

What is electrochemistry?

Back

The branch of chemistry that deals with the relationship between electricity and chemical reactions.

Front

Define standard cell potential.

Back

The measure of the voltage produced by a galvanic cell under standard conditions (1 M concentration, 1 atm pressure, and 25°C).

Front

What is a galvanic cell?

Back

A device that converts chemical energy into electrical energy through spontaneous redox reactions.

Front

What is the Nernst equation?

Back

An equation that relates the cell potential to the standard cell potential and the concentrations of the reactants and products.

Front

What is oxidation?

Back

The loss of electrons by a substance during a chemical reaction.

Front

What is reduction?

Back

The gain of electrons by a substance during a chemical reaction.

Front

What is a redox reaction?

Back

A chemical reaction that involves the transfer of electrons between two species.

Front

What is the role of a salt bridge in a galvanic cell?

Back

To maintain electrical neutrality by allowing the flow of ions between the two half-cells.

Front

How do you calculate the standard cell potential for a galvanic cell?

Back

By subtracting the standard reduction potential of the anode from that of the cathode.

Front

What is corrosion?

Back

The gradual destruction of materials, usually metals, by chemical reactions with their environment.