Balancing Chemical Equations

The video tutorial demonstrates how to balance the chemical equation Na2CO3 + HCl. It begins by counting the atoms on both sides of the equation, then proceeds to balance sodium and chlorine by adjusting coefficients. Finally, it balances hydrogen atoms, resulting in a balanced equation: Na2CO3 + 2HCl → 2NaCl + H2O + CO2. The tutorial emphasizes the importance of balancing each type of atom to achieve a correct chemical equation.

What is the initial number of sodium atoms on the reactant side of the equation Na2CO3 + HCl?

• Three

• Four

• Two

• One

How many oxygen atoms are present in total on the product side before balancing?

• Four

• Three

• Two

• One

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

• One

• Two

• Three

• Four

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

• One

• Two

• Three

• Four

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

• Two

• One

• Three

• Four

What is the final balanced equation for Na2CO3 + HCl?

• Na2CO3 + 2HCl → NaCl + H2O + CO2

• Na2CO3 + HCl → 2NaCl + H2O + CO2

• Na2CO3 + 2HCl → 2NaCl + H2O + CO2

• Na2CO3 + HCl → NaCl + H2O + CO2