Chemical Reactions and Balancing Equations

This video tutorial demonstrates how to balance the chemical equation for the decomposition of sodium carbonate (Na2CO3) into sodium oxide (Na2O) and carbon dioxide (CO2). The instructor explains the process of counting atoms on both sides of the equation and highlights common mistakes, particularly in counting oxygen atoms. The video concludes with a balanced equation and a reminder to double-check atom counts.

What are the products formed when sodium carbonate decomposes?

• Sodium bicarbonate and hydrogen

• Sodium oxide and carbon dioxide

• Sodium chloride and water

• Sodium hydroxide and oxygen

How many sodium atoms are present on the reactant side of the equation?

• One

• Two

• Three

• Four

What is the total number of oxygen atoms on the product side of the equation?

• Four

• One

• Two

• Three

What might be a common mistake when counting oxygen atoms in this equation?

• Counting sodium atoms instead

• Counting carbon atoms twice

• Forgetting to count the oxygen in carbon dioxide

• Ignoring sodium oxide completely

What is the balanced chemical equation for the decomposition of sodium carbonate?

• Na2CO3 → Na2O + CO2

• Na2CO3 → 2Na + CO2

• Na2CO3 → Na2 + CO3

• Na2CO3 → Na2O + C + O2