Balancing Chemical Reactions

The video tutorial explains how to balance a chemical equation involving aluminum oxide and sulfuric acid. It begins by identifying the reactants and products, then counts the atoms on each side of the equation. The tutorial simplifies the process by treating the sulfate ion as a single unit, making it easier to balance. The instructor demonstrates how to adjust coefficients to balance the number of atoms, focusing on sulfate ions, hydrogens, and oxygens. The video concludes with a balanced equation and a brief summary.

What are the reactants in the given chemical reaction?

• Aluminum oxide and sulfuric acid

• Aluminum oxide and water

• Aluminum sulfate and water

• Sulfuric acid and water

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

• Four

• Two

• Three

• One

What is the sulfate ion represented as in the equation?

• SO3

• SO5

• SO2

• SO4

How many sulfate ions are present on the reactant side before balancing?

• Three

• Four

• Two

• One

What coefficient is placed in front of H2SO4 to balance the sulfate ions?

• One

• Two

• Three

• Four

After balancing sulfate ions, how many hydrogen atoms are there on the reactant side?

• Eight

• Six

• Four

• Two

What coefficient is used in front of H2O to balance the hydrogen atoms?

• Four

• Three

• Two

• One

How many oxygen atoms are present on each side of the equation after balancing?

• Four

• One

• Three

• Two

What is the final balanced equation for the reaction?

• Al2O3 + 2H2SO4 → Al2(SO4)3 + 2H2O

• Al2O3 + 4H2SO4 → Al2(SO4)3 + 4H2O

• Al2O3 + 3H2SO4 → Al2(SO4)3 + 3H2O

• Al2O3 + H2SO4 → Al2(SO4)3 + H2O

Who is the narrator of the video?

• Dr. A

• Dr. D

• Dr. C

• Dr. B