Redox

Front

What is a redox reaction?

Back

A redox reaction is a chemical reaction that involves the transfer of electrons between two species, resulting in changes in oxidation states.

Front

What does oxidation mean in a redox reaction?

Back

Oxidation is the process in which an atom, ion, or molecule loses electrons, resulting in an increase in oxidation state.

Front

What does reduction mean in a redox reaction?

Back

Reduction is the process in which an atom, ion, or molecule gains electrons, resulting in a decrease in oxidation state.

Front

What is the oxidation number?

Back

The oxidation number is a value assigned to an element in a compound that represents the number of electrons lost or gained by that element during a chemical reaction.

Front

What is an electrolytic cell?

Back

An electrolytic cell is an electrochemical cell that uses electrical energy to drive a non-spontaneous chemical reaction.

Front

What is a voltaic cell?

Back

A voltaic cell, also known as a galvanic cell, is an electrochemical cell that converts chemical energy into electrical energy through spontaneous redox reactions.

Front

What occurs at the anode of an electrolytic cell?

Back

Oxidation occurs at the anode of an electrolytic cell.

Front

What occurs at the cathode of an electrolytic cell?

Back

Reduction occurs at the cathode of an electrolytic cell.

Front

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

Back

A salt bridge allows the flow of ions between the two half-cells, maintaining electrical neutrality and completing the circuit.

Front

What is the significance of the standard electrode potential?

Back

The standard electrode potential indicates the tendency of a species to be reduced, with higher values indicating a greater tendency to gain electrons.