Balancing Chemical Reactions

The video tutorial demonstrates how to balance a chemical equation involving hydroiodic acid and chlorine gas. It begins by counting the atoms on both sides of the equation, then proceeds to balance iodine atoms by adjusting coefficients. Next, it balances hydrogen and chlorine atoms, ensuring the equation is balanced on both sides. The tutorial concludes with a final balanced equation and closing remarks.

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

• Two

• Four

• Three

• One

Which element is balanced first in the equation?

• Chlorine

• Oxygen

• Iodine

• Hydrogen

What coefficient is placed in front of hydroiodic acid to balance iodine atoms?

• 4

• 1

• 2

• 3

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

• Four

• Three

• One

• Two

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

• 4

• 3

• 2

• 1

What is the final balanced equation for the reaction?

• 2HI + Cl2 → HCl + 2I2

• HI + 2Cl2 → HCl + 2I2

• 2HI + Cl2 → 2HCl + I2

• HI + Cl2 → HCl + I2