Balancing Chemical Equations

The video tutorial demonstrates how to balance a chemical equation involving sodium and sodium hydroxide. It begins by counting the atoms on each side of the equation and identifies the need to balance hydrogen atoms by adjusting coefficients. The tutorial continues by balancing oxygen and sodium atoms, making necessary adjustments to achieve a balanced equation. The process concludes with a final check to ensure all elements are balanced, resulting in a complete and balanced chemical equation.

What is the initial number of sodium atoms on the reactant side before balancing?

• Three

• Two

• Four

• One

How many hydrogen atoms are present on the product side before balancing?

• Two

• One

• Four

• Three

What coefficient is placed in front of sodium hydroxide to balance the hydrogen atoms?

• 4

• 2

• 1

• 3

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

• Three

• One

• Four

• Two

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

• Two

• Five

• Three

• Four

What coefficient is used in front of Na2O to balance the oxygen atoms?

• 3

• 2

• 1

• 4

How many sodium atoms are on the reactant side after placing a coefficient of 2 in front of sodium?

• Four

• Three

• Two

• Five

What is the final number of sodium atoms on both sides of the equation after balancing?

• Five

• Four

• Three

• Two

What is the final balanced equation for the reaction?

• 4Na + 2NaOH → 2Na2O + H2

• 2Na + 2NaOH → 2Na2O + H2

• Na + NaOH → Na2O + H2

• 2Na + 2NaOH → Na2O + 2H2