Phosphite Ion Properties and Oxidation

The video tutorial explains how to determine the oxidation numbers for elements in the phosphite ion (PO3^3-). It begins by discussing the general rules for oxidation numbers, emphasizing that the sum of oxidation numbers in an ion equals its charge. The tutorial highlights that oxygen typically has a -2 oxidation number. The calculation process is demonstrated, showing that phosphorus in PO3^3- has an oxidation number of +3. The video concludes with a summary of the findings.

What is the charge of the phosphite ion?

• -3

• -2

• +3

• +2

Which element in the phosphite ion is known to have a consistent oxidation number, and what is that number?

• Phosphorus, -3

• Phosphorus, +3

• Oxygen, +2

• Oxygen, -2

How many oxygen atoms are present in the phosphite ion?

• 2

• 3

• 5

• 4

What is the oxidation number of phosphorus in the phosphite ion?

• +3

• -5

• -3

• +5

What is the total oxidation number of all oxygen atoms in the phosphite ion?

• -2

• -8

• -3

• -6

What is the overall ionic charge of the phosphite ion?

• +3

• -3

• +2

• -2