Oxidation Numbers in K3PO4

This video tutorial explains how to find oxidation numbers for elements in K3PO4, a neutral compound. It begins by noting that the sum of oxidation numbers in a neutral compound is zero. Potassium, in group one, has an oxidation number of +1. Oxygen typically has an oxidation number of -2. The video sets up an equation to find the oxidation number of phosphorus, which is not readily available. By solving the equation, the oxidation number for phosphorus is determined to be +5. The video concludes with a summary of the findings.

What is the overall charge of the compound K3PO4?

• Neutral

• Negative

• Variable

• Positive

Which group does potassium belong to, and what is its typical oxidation number?

• Group 4, +4

• Group 2, +2

• Group 3, +3

• Group 1, +1

Why is the oxidation number of phosphorus not immediately known?

• It is not a common element.

• It varies depending on the compound.

• It is always zero.

• It is not listed in the common oxidation states.

What is the typical oxidation number for oxygen in compounds?

• -2

• 0

• -3

• -1

How many oxygen atoms are present in K3PO4?

• 3

• 5

• 2

• 4

What is the equation used to find the oxidation number of phosphorus in K3PO4?

• 3 - x + 8 = 0

• x + 8 = 0

• 3x - 8 = 0

• 3 + x - 8 = 0

What is the oxidation number of phosphorus in K3PO4?

• +5

• +4

• +6

• +3

What is the oxidation number of each potassium atom in K3PO4?

• +4

• +1

• +2

• +3

What is the sum of all oxidation numbers in a neutral compound like K3PO4?

• -1

• +2

• +1

• 0