Oxidation Numbers in KBrO4

The video tutorial explains how to determine the oxidation numbers for elements in the compound KBrO4, potassium perbromate. It starts by noting that KBrO4 is a neutral compound, meaning the sum of oxidation numbers is zero. Potassium, being in group one, has a +1 oxidation number. Bromine's oxidation number is unknown when bonded to oxygen, so it is represented as 'x'. Oxygen typically has a -2 oxidation number. An equation is set up to solve for 'x', leading to the conclusion that bromine has a +7 oxidation number. The video concludes with a recap of the solution process.

What is the overall charge of the compound KBrO4?

• Positive

• Negative

• Neutral

• Depends on the elements

What is the oxidation number of potassium in KBrO4?

• +1

• +2

• 0

• -1

Why is the oxidation number of bromine not -1 in KBrO4?

• Because it is a metal

• Because it is in group 17

• Because it is bonded to oxygen

• Because it is a noble gas

What is the typical oxidation number of oxygen in compounds?

• -2

• 0

• -1

• +2

What equation is set up to find the oxidation number of bromine in KBrO4?

• x + 7 = 0

• x - 1 = 0

• x + 1 = 0

• x - 7 = 0

What is the oxidation number of bromine in KBrO4?

• +5

• +6

• +7

• -1

How do the oxidation numbers in KBrO4 add up?

• To +1

• To 0

• To -1

• To +2