REDOX Review 1

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 their 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 its 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 its oxidation state.

Front

What is an oxidizing agent?

Back

An oxidizing agent is a substance that causes oxidation by accepting electrons from another substance.

Front

What is a reducing agent?

Back

A reducing agent is a substance that causes reduction by donating electrons to another substance.

Front

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

Back

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

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 number of sulfur in Na2S2O3?

Back

To determine the oxidation number of sulfur in Na2S2O3, consider the overall charge of the compound and the known oxidation states of sodium (+1) and oxygen (-2). The oxidation number of sulfur is +2.

Front

What is the half-reaction for the reduction of Sn4+ to Sn2+?

Back