Oxidation Numbers and Ions

The video tutorial explains how to find the oxidation number for vanadium in the VO2+ ion. It begins by introducing the concept of oxidation numbers and the significance of ion charges. The instructor sets up an equation to solve for vanadium's oxidation number, using the known oxidation state of oxygen. The solution reveals that vanadium has an oxidation number of +5. The video concludes with a summary of the calculation process.

What is the oxidation number of oxygen in most compounds?

• +2

• -2

• 0

• +1

In the VO2+ ion, what should the sum of the oxidation numbers equal?

• 0

• -1

• +2

• +1

What variable is used to represent the unknown oxidation number of vanadium in the equation?

• v

• x

• z

• y

How do you solve for the oxidation number of vanadium in the VO2+ ion?

• Subtract 4 from both sides

• Add 4 to both sides

• Multiply both sides by 2

• Divide both sides by 2

What is the oxidation number of vanadium in the VO2+ ion?

• +4

• +6

• +3

• +5

What is the overall charge of the VO2+ ion?

• -1

• +2

• 0

• +1