What is the compound KO2 commonly known as?

Oxidation Numbers in KO2

Interactive Video
•
Chemistry
•
10th - 12th Grade
•
Hard

Amelia Wright
FREE Resource
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9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Potassium peroxide
Potassium superoxide
Potassium dioxide
Potassium oxide
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a neutral compound, what should the sum of all oxidation numbers equal?
1
0
-1
Depends on the compound
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the oxidation number of potassium in KO2?
+2
0
-1
+1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main challenge in determining the oxidation number of oxygen in KO2?
Oxygen is in a different group
Oxygen forms multiple bonds
Oxygen is not present in KO2
Oxygen's oxidation number is not a whole number
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What equation is set up to find the oxidation number of oxygen in KO2?
1 + 2x = 0
x + 2 = 0
1 + x = 0
2x - 1 = 0
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the oxidation number of each oxygen atom in KO2?
-1/2
-1
0
+1/2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it acceptable for oxidation numbers to be fractions?
Because they are not used in chemistry
Because they are part of an accounting system
Because they are always whole numbers
Because they represent ionic charges
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the total oxidation number for the two oxygen atoms in KO2?
-1
-2
0
+1
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the overall oxidation number for the compound KO2?
+2
-1
+1
0
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