Balancing Reactions of Methane and Chlorine

This video tutorial demonstrates how to balance the chemical equation for the reaction between methane (CH4) and chlorine gas (Cl2) to produce carbon tetrachloride and hydrochloric acid. The instructor explains the need for UV light to initiate the reaction and provides a step-by-step guide to balancing the equation, focusing on adjusting hydrogen and chlorine atoms. The video concludes with a balanced equation and a brief summary by Dr. B.

What are the products formed when methane reacts with chlorine gas?

• Carbon monoxide and hydrogen chloride

• Carbon dioxide and water

• Carbon tetrachloride and hydrochloric acid

• Methanol and chlorine gas

Why is UV light necessary for the reaction between methane and chlorine gas?

• It acts as a catalyst.

• It absorbs excess chlorine gas.

• It cools down the reaction mixture.

• It provides energy to initiate the reaction.

How many hydrogen atoms are present on the reactant side before balancing?

• One

• Four

• Two

• Three

What is the first step taken to balance the hydrogen atoms in the equation?

• Adding a coefficient of 4 in front of hydrochloric acid

• Adding a coefficient of 2 in front of carbon tetrachloride

• Adding a coefficient of 2 in front of methane

• Adding a coefficient of 3 in front of chlorine gas

After balancing hydrogen atoms, how many chlorine atoms are present on the product side?

• Ten

• Eight

• Four

• Six

What is the final coefficient added to balance the chlorine atoms?

• Two

• Three

• Four

• Five

What is the balanced chemical equation for the reaction between methane and chlorine gas?

• CH4 + 2Cl2 → CCl4 + 2HCl

• CH4 + Cl2 → CCl4 + HCl

• CH4 + 4Cl2 → CCl4 + 4HCl

• CH4 + 3Cl2 → CCl4 + 3HCl

Which element is balanced last in the equation?

• Hydrogen

• Oxygen

• Carbon

• Chlorine

What is the role of Dr. B in the video?

• He is the narrator explaining the balancing process.

• He is a student learning the equation.

• He is a chemist conducting the experiment.

• He is a teacher grading the quiz.