Oxidation Numbers in Compounds

This video tutorial explains how to determine the oxidation numbers for each element in MnSO4. It begins by noting that MnSO4 is a neutral compound, meaning the oxidation numbers must sum to zero. The video then focuses on manganese, a transition metal, and explains how its oxidation state can be deduced from its bonding with the sulfate ion (SO4). The sulfate ion has a known charge of -2, which helps determine the oxidation number of manganese as +2. The tutorial further breaks down the oxidation numbers for sulfur and oxygen within the sulfate ion, using an equation to find sulfur's oxidation number as +6, while each oxygen is -2. The video concludes by summarizing the oxidation numbers for manganese, sulfur, and oxygen in MnSO4.

What is the total sum of oxidation numbers in a neutral compound like MnSO4?

• It adds up to -2

• It adds up to +2

• It adds up to zero

• It adds up to +4

Which type of metal is manganese, and why is it significant in determining its oxidation state?

• Alkali metal, because it has a fixed oxidation state

• Halogen, because it forms diatomic molecules

• Transition metal, because it has multiple oxidation states

• Noble gas, because it is inert

What is the oxidation number of the sulfate ion (SO4) as a whole?

• +1

• -2

• -1

• +2

How do you determine the oxidation number of sulfur in the sulfate ion?

• By assuming it is always +4

• By using the known oxidation number of oxygen

• By assuming it is always -2

• By using the known oxidation number of hydrogen

What is the typical oxidation number of oxygen in compounds, excluding exceptions?

• -2

• -1

• 0

• +1

What is the oxidation number of sulfur in the sulfate ion after calculation?

• -6

• +4

• +6

• -4

What is the oxidation number of manganese in MnSO4?

• +1

• +4

• +2

• +3

What is the oxidation number of each oxygen atom in MnSO4?

• -2

• 0

• -1

• +2

Which element in MnSO4 has an oxidation number of +6?

• Manganese

• Sulfur

• Hydrogen

• Oxygen

What is the significance of knowing the oxidation numbers in a compound like MnSO4?

• It helps in determining the molecular weight

• It is crucial for balancing chemical equations

• It determines the color of the compound

• It is used to calculate the boiling point