Aluminum Sulfide Reactions and Properties

This video tutorial explains how to balance the chemical equation for aluminum reacting with sulfur to form aluminum sulfide (Al2S3). It begins by counting the atoms of aluminum and sulfur on both sides of the equation. The tutorial then demonstrates how to balance the equation by adjusting coefficients, ensuring the number of atoms for each element is equal on both sides. Finally, it explains why the formula for aluminum sulfide is Al2S3, based on the ionic charges of aluminum and sulfur, resulting in a neutral compound.

What is the product formed when aluminum reacts with sulfur?

• Aluminum sulfate

• Sulfur dioxide

• Aluminum sulfide

• Aluminum oxide

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

• Four

• Three

• Two

• One

What coefficient is needed in front of aluminum to balance the equation?

• 4

• 3

• 2

• 1

How many sulfur atoms are needed on the reactant side to balance the equation?

• Two

• Three

• Four

• One

Why is the formula for aluminum sulfide Al2S3?

• Because aluminum and sulfur have equal charges

• Due to the 3+ charge of aluminum and 2- charge of sulfur

• Because sulfur has a higher atomic number

• Due to the 2+ charge of aluminum and 3- charge of sulfur

What is the total charge of the aluminum ions in Al2S3?

• 3+

• 6+

• 2+

• 6-

What is the total charge of the sulfur ions in Al2S3?

• 6-

• 6+

• 3-

• 2-