Redox Reactions

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 it mean for a substance to be oxidized?

Back

Oxidation refers to the loss of electrons by a substance during a chemical reaction.

Front

What does it mean for a substance to be reduced?

Back

Reduction refers to the gain of electrons by a substance during a chemical reaction.

Front

In a redox reaction, what happens to the oxidation state of the oxidized substance?

Back

The oxidation state of the oxidized substance increases.

Front

In a redox reaction, what happens to the oxidation state of the reduced substance?

Back

The oxidation state of the reduced substance decreases.

Front

What is the role of an oxidizing agent in a redox reaction?

Back

An oxidizing agent is a substance that gains electrons and is reduced in the process.

Front

What is the role of a reducing agent in a redox reaction?

Back

A reducing agent is a substance that loses electrons and is oxidized in the process.

Front

Identify the oxidizing agent in the reaction: 2H2 + O2 -> 2H2O.

Back

Oxygen (O2) is the oxidizing agent as it gains electrons.

Front

Identify the reducing agent in the reaction: Zn + CuSO4 -> ZnSO4 + Cu.

Back

Zinc (Zn) is the reducing agent as it loses electrons.

Front

What is the oxidation state of oxygen in most compounds?

Back

The oxidation state of oxygen in most compounds is -2.