Oxidation Numbers and Compounds

The video tutorial explains how to determine the oxidation numbers for each element in the compound H4SiO4. It begins by noting that the compound is neutral, meaning the sum of oxidation numbers must equal zero. The oxidation number for hydrogen is +1, while oxygen is typically -2. Silicon's oxidation number is unknown and represented as X. An equation is set up to solve for X, resulting in silicon having an oxidation number of +4. The tutorial concludes with a summary of the oxidation states for each element in H4SiO4.

What is the overall charge of the compound H4SiO4?

• Variable

• Positive

• Neutral

• Negative

When hydrogen is bonded to non-metals, what is its typical oxidation number?

• -1

• 0

• +1

• +2

What is the oxidation number of oxygen in most compounds?

• +1

• -1

• -2

• +2

In the compound H4SiO4, how many oxygen atoms are present?

• 5

• 2

• 3

• 4

What is the unknown variable used to represent silicon's oxidation number in the equation?

• Z

• Y

• X

• W

What is the oxidation number of silicon in H4SiO4 after solving the equation?

• +3

• +4

• +5

• +2

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

• 0

• +2

• +1

• -1