Oxidation Numbers in Sodium Peroxide

The video tutorial explains how to determine the oxidation numbers for each element in sodium peroxide (Na2O2). It begins by discussing the rules for oxidation numbers, highlighting that oxygen has a non-standard oxidation number in peroxides. The tutorial explains that sodium, being in group one, has a +1 oxidation number. It then sets up an equation to calculate the oxidation number of oxygen in Na2O2, concluding that each oxygen atom has an oxidation number of -1. The video ends with a summary of the findings.

What is the oxidation number of sodium in sodium peroxide (Na2O2)?

• 0

• +2

• +1

• -1

Why is the oxidation number of oxygen in sodium peroxide different from its usual state?

• Because it is bonded to sodium

• Because it is part of a peroxide

• Because it is in a neutral compound

• Because it is in group one of the periodic table

What is the typical oxidation number of oxygen in most compounds?

• -1

• +1

• -2

• +2

In the equation set up to find the oxidation number of oxygen in Na2O2, what does 'x' represent?

• The number of oxygen atoms

• The oxidation number of oxygen

• The total charge of the compound

• The oxidation number of sodium

How many sodium atoms are considered in the equation for Na2O2?

• 4

• 2

• 1

• 3

What is the result of the equation 2 + 2x = 0 when solved for x?

• x = 0

• x = 1

• x = -2

• x = -1

What is the oxidation number of each oxygen atom in sodium peroxide (Na2O2)?

• -2

• -1

• +1

• 0

What is the total oxidation number of all atoms in a neutral compound like Na2O2?

• +2

• +1

• 0

• -1