Balancing Chemical Equations

The video tutorial demonstrates how to balance the chemical equation involving sodium and phosphoric acid. It begins by identifying the number of atoms on each side of the equation, then proceeds to balance sodium and hydrogen atoms. The tutorial explains the process of adjusting coefficients to achieve a balanced equation, ensuring that the number of atoms for each element is equal on both sides. The video concludes with a fully balanced equation and a brief thank you from Dr. B.

What is the initial count of sodium atoms on the reactant side?

• Four

• Three

• Two

• One

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

• Two

• One

• Three

• Four

What is the first step taken to balance the sodium atoms?

• Add a coefficient of 3 to sodium

• Add a coefficient of 2 to sodium

• Add a coefficient of 4 to sodium

• Add a coefficient of 5 to sodium

How is the hydrogen atom count balanced on the product side?

• By multiplying by 5

• By multiplying by 4

• By multiplying by 3

• By multiplying by 2

What is the coefficient used to balance the phosphate groups?

• 4

• 3

• 2

• 1

How many sodium atoms are present on the product side after balancing?

• Three

• Four

• Five

• Six

What is the final balanced equation for sodium and phosphoric acid?

• 2Na + H3PO4 → Na2PO4 + H2

• 3Na + H3PO4 → Na3PO4 + 3H2

• Na + H3PO4 → NaPO4 + H2

• 6Na + 2H3PO4 → 2Na3PO4 + 6H2

What is the total number of hydrogen atoms on the product side after balancing?

• Eight

• Six

• Four

• Two

What is the role of Dr. B in the video?

• He is a physicist

• He is a chemist

• He is a teacher

• He is a student