Balancing Combustion Reactions

Dr. B demonstrates how to balance a combustion reaction involving hexane. The process begins with balancing carbon and hydrogen atoms, followed by recalculating and balancing oxygen atoms. The reaction is initially balanced with fractional coefficients, which are then converted to whole numbers for the final balanced equation. The video concludes with the presentation of the balanced equation coefficients.

What is the initial number of carbon atoms on the reactant side in the given combustion reaction?

• 1

• 19

• 6

• 14

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

• 14

• 2

• 6

• 12

What coefficient is placed in front of the carbon on the product side to balance the carbon atoms?

• 12

• 6

• 7

• 1

How many hydrogen atoms are on the product side after balancing?

• 2

• 14

• 6

• 12

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

• 14

• 21

• 19

• 12

What fraction is used to balance the oxygen atoms in the equation?

• 12/2

• 7/2

• 6/2

• 19/2

What is the final coefficient for oxygen when converting to whole numbers?

• 12

• 19

• 6

• 14

What are the final coefficients for the balanced hexane combustion reaction?

• 2, 19, 12, 14

• 1, 6, 7, 12

• 6, 12, 14, 19

• 2, 6, 12, 14