Balancing Chemical Equations

The video tutorial explains how to balance a chemical equation involving sodium chloride and sulfuric acid. It begins by counting the atoms on each side of the equation, identifying discrepancies, and then adjusting coefficients to balance sodium, chlorine, and hydrogen atoms. The process ensures adherence to the law of conservation of mass, resulting in a balanced equation: NaCl + H2SO4 yields Na2SO4 + HCl.

What is the initial imbalance identified in the chemical equation involving sodium chloride and sulfuric acid?

• Sodium and chlorine

• Sodium and hydrogen

• Chlorine and sulfate

• Hydrogen and sulfate

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

• One

• Four

• Two

• Three

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

• 3

• 4

• 2

• 1

After balancing sodium, what issue arises with the chlorine atoms?

• Chlorines are missing from the equation.

• Chlorines are already balanced.

• There are too few chlorines on the product side.

• There are too many chlorines on the reactant side.

What coefficient is used to balance the chlorine atoms on the product side?

• 4

• 1

• 2

• 3

How many hydrogen atoms are present on each side after balancing?

• One

• Two

• Three

• Four

What law is obeyed once the chemical equation is balanced?

• Law of Constant Composition

• Law of Conservation of Mass

• Law of Multiple Proportions

• Law of Definite Proportions

What is the final balanced equation for the reaction between NaCl and H2SO4?

• NaCl + H2SO4 → Na2SO4 + HCl

• 2NaCl + 2H2SO4 → 2Na2SO4 + 2HCl

• 2NaCl + H2SO4 → Na2SO4 + 2HCl

• NaCl + 2H2SO4 → Na2SO4 + HCl