Balancing Chemical Equations

The video tutorial demonstrates how to balance the chemical equation CF4 + Br2, which involves carbon tetrafluoride and bromine gas. Initially, the atoms on both sides of the equation are counted: one carbon, four fluorines, and two bromines on the reactant side, and one carbon, two fluorines, and four bromines on the product side. The tutorial then explains how to balance the fluorine atoms by placing a coefficient of two in front of F2, resulting in four fluorine atoms on both sides. Next, the bromine atoms are balanced by placing a coefficient of two in front of Br2, resulting in four bromine atoms on both sides. The final balanced equation is CF4 + 2Br2 → CBr4 + 2F2.

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

• Three

• Four

• Two

• One

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

• Two

• Six

• Eight

• Four

What coefficient is placed in front of F2 to balance the fluorine atoms?

• Three

• Four

• Two

• One

How many bromine atoms are on the reactant side before balancing?

• Four

• One

• Two

• Three

What is the final balanced equation for the reaction?

• CF4 + Br2 → CBr4 + 2F2

• CF4 + 2Br2 → CBr4 + 2F2

• CF4 + Br2 → CBr4 + F2

• CF4 + 2Br2 → CBr4 + F2