Balancing Combustion Reactions

The video tutorial explains the process of balancing a combustion reaction involving C5H12O2 and O2. It begins by introducing the reaction and counting the atoms on both sides of the equation. The tutorial then demonstrates how to balance carbon, hydrogen, and oxygen atoms, emphasizing the strategy of leaving oxygen atoms to be balanced last. The final balanced equation is presented, and the strategy is summarized.

What are the products formed in the combustion reaction of C5H12O2 with O2?

• Carbon monoxide and water

• Oxygen and hydrogen

• Carbon dioxide and water

• Methane and water

How many carbon atoms are present on the reactant side of the equation?

• Three

• Four

• Five

• Six

What coefficient is placed in front of CO2 to balance the carbon atoms?

• 6

• 3

• 4

• 5

How many hydrogen atoms are present on the reactant side before balancing?

• 12

• 10

• 14

• 16

What coefficient is used in front of H2O to balance the hydrogen atoms?

• 7

• 5

• 4

• 6

What is the total number of oxygen atoms on the product side after balancing carbon and hydrogen?

• 16

• 14

• 18

• 12

What coefficient is placed in front of O2 to balance the oxygen atoms?

• 8

• 7

• 6

• 5

What is the final balanced equation for the combustion of C5H12O2?

• C5H12O2 + 5O2 → 5CO2 + 6H2O

• C5H12O2 + 8O2 → 5CO2 + 6H2O

• C5H12O2 + 7O2 → 5CO2 + 6H2O

• C5H12O2 + 6O2 → 5CO2 + 6H2O

Why is it recommended to leave oxygen atoms to balance last?

• Oxygen is the most reactive element

• Oxygen is present in multiple compounds

• Oxygen is the heaviest element

• Oxygen is by itself and easier to adjust

Who is the narrator of the video?

• Dr. B

• Dr. A

• Dr. C

• Dr. V