Oxidation Numbers and Compounds

The video tutorial explains how to find the oxidation number of carbon in CHCl3, also known as trichloromethane or chloroform. It begins by discussing the neutrality of the compound, meaning all oxidation numbers must sum to zero. The video assigns oxidation numbers to hydrogen (+1) and chlorine (-1), and then sets up an equation to solve for carbon's oxidation number, which is determined to be +2. The tutorial concludes by verifying that the sum of all oxidation numbers equals zero.

What is the common historical name for CHCl3?

• Carbon Tetrachloride

• Chloroform

• Dichloromethane

• Methane

In a neutral compound, what should the sum of all oxidation numbers equal?

• Depends on the compound

• 1

• 0

• -1

What variable is used to represent the unknown oxidation state of carbon in the tutorial?

• x

• z

• c

• y

What is the oxidation number of hydrogen when bonded to nonmetals?

• +1

• +2

• 0

• -1

Which group does chlorine belong to, and what is its usual oxidation number?

• Group 18, 0

• Group 15, +1

• Group 17, -1

• Group 16, -2

What is the oxidation number of chlorine in CHCl3?

• -2

• +1

• 0

• -1

What is the oxidation number of carbon in CHCl3?

• +2

• +4

• -2

• 0

What is the final sum of all oxidation numbers in CHCl3?

• +2

• +1

• 0

• -1