Balancing Combustion Reactions

The video tutorial demonstrates how to balance the chemical equation for C4H10O2 plus O2, a hydrocarbon combustion reaction. It begins by balancing carbon and hydrogen atoms, then addresses the challenge of balancing oxygen atoms. The instructor explains the use of fractional coefficients and eventually doubles the coefficients to achieve a balanced equation. The tutorial concludes with a balanced equation and emphasizes careful consideration of each step.

What type of reaction is C4H10O2 plus O2?

• Synthesis

• Decomposition

• Combustion

• Single Replacement

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

• 1

• 2

• 3

• 4

What is the total number of hydrogen atoms on the product side after initial balancing?

• 4

• 2

• 6

• 10

Why is it challenging to balance the oxygen atoms initially?

• Oxygen is not reactive

• Oxygen is a noble gas

• Oxygen appears in multiple compounds

• Oxygen is already balanced

What strategy is used to make balancing the equation more manageable?

• Using a catalyst

• Adding more reactants

• Doubling all coefficients

• Removing oxygen

After doubling the coefficients, what is the new coefficient for C4H10O2?

• 4

• 3

• 2

• 1

What is the final coefficient for O2 to balance the equation?

• 14

• 13

• 12

• 11

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

• 26

• 24

• 22

• 28

What is the final balanced equation for C4H10O2 plus O2?

• C4H10O2 + 5O2 → 4CO2 + 5H2O

• 2C4H10O2 + 11O2 → 8CO2 + 10H2O

• 2C4H10O2 + 13O2 → 8CO2 + 10H2O

• C4H10O2 + 6.5O2 → 4CO2 + 5H2O

What is the main takeaway from balancing this equation?

• Oxygen is always balanced first

• Balancing equations is always straightforward

• Doubling coefficients can simplify balancing

• Fractional coefficients are never used