Balancing Lithium and Hydrogen Reactions

This video tutorial demonstrates how to balance the chemical equation for lithium reacting with hydrogen gas to form lithium hydride. The process involves counting the number of lithium and hydrogen atoms on each side of the equation and adjusting coefficients to ensure both sides are balanced. The tutorial provides a step-by-step guide to achieve a balanced equation, ensuring the number of atoms for each element is equal on both sides.

What is the initial number of hydrogen atoms on the product side of the equation?

• Two

• One

• Four

• Three

What is the first step taken to balance the equation?

• Adding a coefficient of two in front of lithium

• Adding a coefficient of two in front of lithium hydride

• Adding a coefficient of one in front of lithium

• Adding a coefficient of two in front of hydrogen gas

How many lithium atoms are there after adjusting the coefficient in front of LiH?

• One

• Two

• Three

• Four

What is the final step to balance the lithium atoms in the equation?

• Adding a coefficient of three in front of lithium

• Adding a coefficient of two in front of lithium

• Adding a coefficient of one in front of lithium hydride

• Adding a coefficient of two in front of hydrogen gas

What is the balanced chemical equation for lithium and hydrogen gas?

• Li + H2 → LiH

• Li + 2H2 → LiH

• 2Li + H2 → 2LiH

• 2Li + 2H2 → 2LiH

Who is the presenter of the video?

• Dr. A

• Dr. B

• Dr. C

• Dr. D