Oxidation Numbers in KIO3

The video tutorial explains how to find the oxidation numbers for each element in potassium iodate (KIO3). It begins by introducing the concept of oxidation numbers and explains that the compound is neutral, meaning the oxidation numbers sum to zero. The video details the oxidation numbers for potassium (+1), iodine (variable, solved as +5), and oxygen (-2). An equation is set up to solve for iodine's oxidation number, resulting in a value of +5. The tutorial concludes by summarizing the oxidation numbers and confirming the neutrality of the compound.

What is the oxidation number of potassium in KIO3?

• +1

• 0

• +2

• -1

Why is KIO3 considered a neutral compound?

• Because it has no charge

• Because it has a positive charge

• Because it has a negative charge

• Because it is an ionic compound

What is the typical oxidation number for iodine when not bonded to oxygen or fluorine?

• -1

• +5

• 0

• +1

What is the oxidation number of oxygen in most compounds?

• 0

• -2

• +1

• +2

How many oxygen atoms are present in KIO3?

• 4

• 1

• 3

• 2

What equation is set up to find the oxidation number of iodine in KIO3?

• 1 + 2x = 0

• x + 2(-3) = 0

• 1 + x + 3(-2) = 0

• x - 3 = 0

What is the oxidation number of iodine in KIO3 after solving the equation?

• 0

• +3

• +5

• -1

What is the sum of oxidation numbers in a neutral compound like KIO3?

• +1

• +2

• 0

• -1