Balancing Decomposition Reactions

The video tutorial explains the decomposition of aluminum chloride (AlCl3) into aluminum and chlorine gas. It demonstrates how to balance the chemical equation by adjusting coefficients to ensure the number of atoms on both sides is equal. The process involves making the number of chlorine atoms even and adjusting aluminum accordingly. The final balanced equation is presented with coefficients 2, 2, and 3 for AlCl3, Al, and Cl2, respectively.

What is the initial product formed when aluminum chloride decomposes?

• Chlorine liquid

• Aluminum and chlorine gas

• Aluminum sulfate

• Aluminum oxide

What is the initial imbalance in the decomposition equation of AlCl3?

• More aluminum atoms on the product side

• More chlorine atoms on the reactant side

• More aluminum atoms on the reactant side

• More chlorine atoms on the product side

Why is it beneficial to convert odd numbers to even numbers when balancing equations?

• It makes the equation more complex

• It simplifies the balancing process

• It increases the number of atoms

• It decreases the number of atoms

What coefficient is placed in front of AlCl3 to start balancing the equation?

• 3

• 2

• 1

• 4

How many chlorine atoms are there after placing the coefficient in front of AlCl3?

• 6

• 5

• 3

• 4

What coefficient is used to balance the chlorine atoms in the equation?

• 4

• 3

• 2

• 1

What is the final coefficient for aluminum in the balanced equation?

• 3

• 1

• 2

• 4

What are the final coefficients for the balanced decomposition of AlCl3?

• 1, 1, 2

• 2, 2, 3

• 2, 3, 2

• 3, 3, 2