Oxidation Numbers and Iodate Ion

The video tutorial explains how to determine the oxidation number of iodine in the iodate ion (IO3-). It begins by discussing the known oxidation number of oxygen and uses this to calculate the oxidation number of iodine. The tutorial demonstrates both a direct calculation and an algebraic method to find that the oxidation number of iodine is +5. The video concludes with a summary of the process.

What is the overall charge of the iodate ion (IO3-)?

• -1

• +1

• -2

• 0

What is the oxidation number of oxygen typically considered to be?

• +2

• -1

• +1

• -2

How many oxygen atoms are present in the iodate ion (IO3-)?

• 4

• 3

• 2

• 1

What is the oxidation number of iodine in the iodate ion (IO3-)?

• +3

• +5

• -5

• +7

In the algebraic method, what variable is used to represent the unknown oxidation number of iodine?

• x

• z

• a

• y

What is the result when you add the oxidation number of iodine to the total oxidation number of the three oxygen atoms in IO3-?

• -2

• +1

• -1

• 0

Who is the presenter of the video?

• Dr. B

• Dr. A

• Dr. D

• Dr. C