Oxidation Numbers in Compounds

The video tutorial explains how to determine the oxidation numbers for each element in KClO2, a neutral compound. Potassium, being in group one, has a +1 oxidation number. Oxygen typically has a -2 oxidation number. By using these known values, the oxidation number for chlorine is calculated to be +3, ensuring the sum of oxidation numbers equals zero. The tutorial concludes with a verification of these calculations.

What does the absence of a charge sign in KClO2 indicate about the compound?

• It is a positively charged compound.

• It is a negatively charged compound.

• It is an unstable compound.

• It is a neutral compound.

What is the oxidation number of potassium in KClO2?

• +2

• +1

• 0

• -1

What is the typical oxidation number for oxygen in compounds?

• -2

• +2

• 0

• -1

How do you determine the oxidation number of chlorine in KClO2?

• By assuming it is always +1.

• By using the atomic number of chlorine.

• By using the known oxidation numbers of potassium and oxygen.

• By assuming it is always -1.

What is the oxidation number of chlorine in KClO2?

• 0

• +3

• +1

• -1

What is the sum of the oxidation numbers in a neutral compound like KClO2?

• +1

• -1

• +2

• 0

Which of the following equations correctly represents the sum of oxidation numbers in KClO2?

• 1 + x + 2(-2) = 0

• 1 + x + 2(+2) = 0

• 1 + x + 2(-1) = 0

• 1 + x + 2(+1) = 0