Oxidation Numbers and Their Applications

This video tutorial explains how to determine the oxidation numbers for each element in the compound K3Fe(CN)6, also known as potassium ferrocyanide. It begins by noting that the compound is neutral, meaning the oxidation numbers must sum to zero. The video details the oxidation number for potassium as +1, discusses the complexity of determining the oxidation number for iron, and explains the cyanide ion's charge. An equation is set up to solve for the unknown oxidation number of iron, resulting in a value of +3. Additional resources are provided for understanding the oxidation numbers of carbon and nitrogen in the cyanide ion.

What is the oxidation number of potassium in K3Fe(CN)6?

• -1

• 0

• +2

• +1

Why is the compound K3Fe(CN)6 considered neutral?

• It has no net charge.

• It is a gas.

• It has more negative charges.

• It has more positive charges.

What is the role of the periodic table in determining the oxidation number of potassium?

• It shows potassium is a metal.

• It shows potassium is a non-metal.

• It indicates potassium is in group one.

• It lists potassium as a noble gas.

What is the charge of the cyanide ion?

• 0

• +1

• -1

• -2

How do the oxidation numbers in an ion relate to its charge?

• They add up to the ion's charge.

• They are always zero.

• They are always positive.

• They are always negative.

What equation is used to find the oxidation number of iron in K3Fe(CN)6?

• 3 + x - 6 = 0

• 3x + 6 = 0

• x - 3 = 0

• x + 6 = 0

What is the oxidation number of iron in K3Fe(CN)6?

• 0

• +2

• +3

• -3

What additional resource is provided for finding the oxidation numbers of carbon and nitrogen?

• A link in the description.

• A classroom handout.

• A textbook reference.

• A video tutorial.

What is the oxidation number of carbon in the cyanide ion?

• +2

• +4

• It is not directly given.

• -1

What is the oxidation number of nitrogen in the cyanide ion?

• It is not directly given.

• 0

• -3

• +1