Redox Reactions

Front

Oxidation is the _________ of electrons.

Back

loss

Front

What substance is oxidized in the following reaction? 4Fe + 3O2 → 2Fe2O3

Back

Iron

Front

What is the oxidation number of oxygen in H2O2?

Back

-1

Front

What is the coefficient of the permanganate ion when the following equation is balanced? MnO4- + Br- → Mn2+ + Br2

Back

4

Front

What is the oxidation number of chlorine in HClO?

Back

+1

Front

Define a redox reaction.

Back

A redox reaction is a chemical reaction in which the oxidation states of one or more substances change due to the transfer of electrons.

Front

What is reduction in terms of electron transfer?

Back

Reduction is the gain of electrons by a substance.

Front

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

Back

A reducing agent donates electrons to another substance, causing that substance to be reduced.

Front

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

Back

An oxidizing agent accepts electrons from another substance, causing that substance to be oxidized.

Front

What is the oxidation number of hydrogen in most compounds?

Back

+1