Week 7: Balancing REDOX reactions

Front

What is oxidation in a chemical reaction?

Back

Oxidation is the process in which a substance loses electrons, resulting in an increase in its oxidation state.

Front

What is reduction in a chemical reaction?

Back

Reduction is the process in which a substance gains electrons, resulting in a decrease in its oxidation state.

Front

What is a REDOX reaction?

Back

A REDOX reaction is a chemical reaction that involves the transfer of electrons between two species, where one is oxidized and the other is reduced.

Front

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

Back

The oxidation state of an element in its elemental form is always 0.

Front

How do you determine the oxidation state of oxygen in compounds?

Back

In most compounds, oxygen has an oxidation state of -2, except in peroxides where it is -1.

Front

What is the oxidation state of hydrogen in compounds?

Back

In most compounds, hydrogen has an oxidation state of +1, except when bonded to metals where it is -1.

Front

What is the half-reaction method?

Back

The half-reaction method is a way to balance REDOX reactions by separating the oxidation and reduction processes into two half-reactions.

Front

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

Back

A reducing agent is a substance that donates electrons to another substance, causing the other substance to be reduced.

Front

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

Back

An oxidizing agent is a substance that accepts electrons from another substance, causing the other substance to be oxidized.

Front

How do you balance a REDOX reaction in acidic solution?

Back

To balance a REDOX reaction in acidic solution, separate the half-reactions, balance atoms and charges, and then combine them.