Balancing Chemical Equations

The video tutorial demonstrates how to balance the chemical equation P4 + S8 yields P2S5. It begins by counting the atoms of phosphorus and sulfur on both sides of the equation. The instructor then applies a strategy to balance the equation by adjusting coefficients, ensuring the number of atoms for each element is equal on both sides. The process involves multiplying and adjusting coefficients to achieve a balanced equation. The tutorial concludes with a verification of the balanced equation and highlights the efficiency of the method used.

What is the initial number of phosphorus atoms on the reactant side in the equation P4 + S8 yields P2S5?

• 2

• 5

• 4

• 8

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

• 4

• 10

• 8

• 5

What coefficient is placed in front of S8 to balance the sulfur atoms?

• 4

• 5

• 8

• 10

After balancing sulfur, what is the total number of sulfur atoms on each side of the equation?

• 24

• 40

• 32

• 16

What coefficient is used in front of P4 to balance the phosphorus atoms?

• 5

• 8

• 4

• 2

What is the final balanced equation for P4 + S8 yields P2S5?

• 4P4 + 5S8 yields 4P2S5

• P4 + S8 yields P2S5

• 4P4 + 5S8 yields 8P2S5

• P4 + 5S8 yields 2P2S5