Balancing Chemical Equations Practice

The video tutorial demonstrates how to balance a chemical equation involving sulfur and sulfuric acid. It begins by counting the atoms on both sides of the equation, then proceeds to balance the sulfur atoms. The instructor then adjusts the oxygen atoms and makes final adjustments to ensure the equation is balanced. The tutorial concludes with a balanced equation for sulfur plus sulfuric acid yielding water and sulfur dioxide.

What is the initial count of sulfur atoms on the reactant side?

• 3

• 2

• 4

• 1

How many oxygen atoms are initially present on the product side?

• 2

• 3

• 4

• 5

What coefficient is placed in front of SO2 to balance sulfur atoms?

• 1

• 2

• 3

• 4

After balancing sulfur, how many oxygen atoms are there on the product side?

• 4

• 5

• 6

• 7

What change is made to the coefficient of H2SO4 to attempt balancing oxygen?

• 4

• 3

• 2

• 1

How many hydrogen atoms are there after adjusting the coefficient of H2SO4?

• 2

• 5

• 3

• 4

What coefficient is used in front of sulfur to balance it with the product side?

• 1

• 2

• 3

• 4

How many total oxygen atoms are there after balancing the equation?

• 8

• 9

• 7

• 6

What is the final balanced equation for the reaction?

• S + H2SO4 → H2O + SO2

• 2S + H2SO4 → H2O + 2SO2

• S + 2H2SO4 → 2H2O + SO2

• 3S + 2H2SO4 → 2H2O + 3SO2

Who is the presenter of the video?

• Dr. B

• Dr. D

• Dr. A

• Dr. C