Balancing Chemical Equations Concepts

This video tutorial demonstrates how to balance the chemical equation for sodium sulfite reacting with hydrochloric acid. It begins by counting the atoms on both the reactant and product sides, highlighting common errors such as missing oxygen atoms in water. The tutorial then guides viewers through balancing sodium and chlorine atoms by adjusting coefficients, followed by balancing hydrogen atoms. The video concludes with a final check to ensure the equation is balanced, emphasizing the importance of careful atom counting.

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

• One

• Two

• Three

• Four

Why is it important to consider the oxygen in water when counting atoms on the product side?

• It changes the number of sodium atoms.

• It affects the number of hydrogen atoms.

• It ensures the correct total count of oxygen atoms.

• It balances the chlorine atoms.

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

• 1

• 2

• 3

• 4

How many chlorine atoms are there on the product side after balancing?

• Four

• One

• Two

• Three

What is the final step in balancing the equation?

• Balancing sulfur atoms

• Balancing hydrogen atoms

• Balancing chlorine atoms

• Balancing sodium atoms

What common error might occur when balancing this equation?

• Overcounting chlorine atoms

• Miscounting sulfur atoms

• Ignoring the oxygen in water

• Forgetting to balance sodium

What is the balanced equation for sodium sulfite reacting with hydrochloric acid?

• Na2SO3 + 2HCl → 2NaCl + H2O + SO2

• Na2SO3 + HCl → NaCl + H2O + SO2

• Na2SO3 + 2HCl → NaCl + H2O + SO2

• Na2SO3 + HCl → 2NaCl + H2O + SO2

Who is the narrator of the video?

• Dr. D

• Dr. C

• Dr. B

• Dr. A