Oxidation Numbers and Hydrofluoric Acid

The video tutorial explains how to find oxidation numbers for hydrofluoric acid (HF) using basic rules. Hydrogen, when bonded to a non-metal like fluorine, has an oxidation number of +1, while fluorine is always -1. Adding these gives a total of zero, indicating HF is a neutral molecule. The video emphasizes the importance of memorizing these general rules.

What is the oxidation number of hydrogen when it is bonded to a non-metal?

• +2

• +1

• -1

• 0

What is the oxidation number of fluorine in hydrofluoric acid?

• +1

• 0

• -1

• +2

Why does the sum of oxidation numbers in HF equal zero?

• Because fluorine is a metal

• Because hydrogen and fluorine have the same oxidation number

• Because HF is an ion

• Because HF is a neutral molecule

Which of the following is true about the oxidation number of fluorine?

• It is always -1

• It is always +1

• It is always 0

• It varies depending on the compound

What should be committed to memory according to the video?

• The color of HF

• The molecular weight of HF

• The general rules for oxidation numbers

• The boiling point of HF