Balancing Chemical Equations Practice

The video tutorial demonstrates how to balance the chemical equation of aluminum oxide reacting with phosphoric acid. It begins by counting the atoms on each side of the equation, then proceeds to balance aluminum and phosphorus atoms. The tutorial continues by adjusting the oxygen and hydrogen atoms, making necessary adjustments to achieve a balanced equation. The process is explained step-by-step, ensuring clarity and understanding.

What is the initial count of oxygen atoms on the left side of the equation?

• 7

• 4

• 3

• 5

How many aluminum atoms are needed on the right side to balance the equation?

• 4

• 2

• 1

• 3

What is the new count of phosphorus atoms after balancing aluminum?

• 1

• 4

• 2

• 3

Which element's atoms are balanced first in the equation?

• Aluminum

• Phosphorus

• Hydrogen

• Oxygen

After balancing phosphorus, what is the total count of oxygen atoms on the left side?

• 9

• 10

• 11

• 12

What coefficient is placed in front of phosphoric acid to balance phosphorus atoms?

• 1

• 2

• 3

• 4

How many hydrogen atoms are present on the right side after balancing?

• 4

• 5

• 6

• 7

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

• 1

• 2

• 3

• 4

What is the final count of oxygen atoms on the right side after balancing?

• 12

• 11

• 10

• 9

What is the final balanced equation for aluminum oxide and phosphoric acid?

• Al2O3 + 2H3PO4 → 2AlPO4 + 3H2O

• Al2O3 + H3PO4 → AlPO4 + H2O

• Al2O3 + 3H3PO4 → 2AlPO4 + 3H2O

• 2Al2O3 + 3H3PO4 → 4AlPO4 + 6H2O