Balancing Chemical Equations

The video tutorial demonstrates how to balance the chemical equation for the decomposition of H2S into S2 and H2. It begins by counting the hydrogen and sulfur atoms on both sides of the equation. The instructor then adjusts the coefficients to balance the sulfur atoms, followed by the hydrogen atoms, ensuring the equation is balanced. The tutorial concludes with a summary of the balanced equation.

What is the initial number of hydrogen atoms on the reactant side in the decomposition of H2S?

• 1

• 3

• 2

• 4

How many sulfur atoms are present on the product side before balancing?

• 2

• 1

• 3

• 4

What coefficient is added in front of H2S to balance the sulfur atoms?

• 4

• 3

• 2

• 1

After balancing sulfur, how many hydrogen atoms are on the reactant side?

• 5

• 2

• 4

• 3

What coefficient is used in front of H2 to balance the hydrogen atoms?

• 1

• 2

• 3

• 4

What is the final balanced equation for the decomposition of H2S?

• H2S -> S2 + H2

• 2H2S -> S2 + 2H2

• H2S -> 2S2 + H2

• 2H2S -> 2S2 + 2H2