Oxidation Numbers in Ammonium Compounds

This video tutorial explains how to determine the oxidation numbers for each element in ammonium hydroxide (NH4OH). It begins by discussing the neutrality of the compound and the importance of oxidation numbers adding up to zero. The video then breaks down the oxidation numbers for the ammonium ion (NH4+) and the hydroxide ion (OH-), explaining how these numbers relate to the overall charge of the ions. The tutorial provides a step-by-step calculation of the oxidation numbers for nitrogen and hydrogen in NH4, and for oxygen and hydrogen in OH, ensuring that the sum matches the expected charge of the ions.

What is the overall charge of ammonium hydroxide?

• Variable

• Positive

• Negative

• Neutral

What is the charge of the ammonium ion (NH4)?

• 0

• -1

• +2

• +1

What is the oxidation number of the entire hydroxide ion?

• +2

• +1

• -1

• 0

In the ammonium ion, what is the oxidation number of hydrogen when bonded to non-metals?

• 0

• +2

• -1

• +1

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

• -3

• +3

• +5

• -5

Which element's oxidation number is not directly given by standard rules in the ammonium ion?

• Hydrogen

• Nitrogen

• Carbon

• Oxygen

What is the oxidation number of oxygen in the hydroxide ion?

• -2

• +2

• 0

• +1

What is the oxidation number of hydrogen in the hydroxide ion?

• +1

• -1

• 0

• +2

How do the oxidation numbers of the elements in ammonium hydroxide add up?

• To +1

• To -1

• To +2

• To 0

What is the significance of the oxidation numbers adding up to zero in a neutral compound?

• It confirms the compound's neutrality.

• It indicates a negative charge.

• It indicates a positive charge.

• It shows the compound is unstable.