Redox Reactions Review

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

Define oxidation in terms of electron transfer.

Back

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

Front

Define reduction in terms of electron transfer.

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 of oxygen in most compounds?

Back

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

Front

What is the oxidation number of hydrogen in most compounds?

Back

The oxidation number of hydrogen in most compounds is +1.

Front

How do you determine the oxidation state of an element in a compound?

Back

The oxidation state of an element in a compound can be determined by using a set of rules, including the known oxidation states of other elements in the compound.

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

In the reaction Zn + H2O → ZnO + H2, which substance is oxidized?

Back

Zinc (Zn) is oxidized in this reaction.