Balancing Chemical Reactions and Ions

This video tutorial demonstrates how to balance the chemical equation of copper (II) sulfate reacting with ammonium hydroxide to yield copper (II) hydroxide and ammonium sulfate. The instructor simplifies the process by grouping polyatomic ions like SO4 and NH4, making it easier to balance the equation. By doubling the ammonium hydroxide, the equation is balanced efficiently. The tutorial emphasizes the importance of recognizing ion groups to simplify balancing chemical equations.

What type of reaction is copper(II) sulfate plus ammonium hydroxide?

• Decomposition reaction

• Synthesis reaction

• Double displacement reaction

• Single displacement reaction

What is the significance of identifying polyatomic ions like SO4 in the equation?

• It helps in simplifying the balancing process.

• It changes the chemical properties of the reaction.

• It is not necessary for balancing equations.

• It only applies to organic reactions.

How many ammonium ions (NH4) are present on the reactant side before balancing?

• Four

• Three

• One

• Two

What coefficient is placed in front of NH4OH to balance the equation?

• 4

• 1

• 2

• 3

After balancing, how many hydroxide ions (OH) are present on the product side?

• Two

• One

• Four

• Three

Why is it important to verify the balance by counting individual atoms?

• To ensure the reaction is spontaneous.

• To confirm the law of conservation of mass is followed.

• To increase the reaction rate.

• To change the reaction type.

What is the main benefit of clumping ions together during balancing?

• It makes the equation more complex.

• It simplifies the balancing process.

• It changes the chemical properties.

• It is only useful for organic reactions.

What is the final balanced equation for the reaction?

• CuSO4 + NH4OH → Cu(OH)2 + (NH4)2SO4

• CuSO4 + 2NH4OH → Cu(OH)2 + (NH4)2SO4

• 2CuSO4 + NH4OH → Cu(OH)2 + (NH4)2SO4

• CuSO4 + NH4OH → 2Cu(OH)2 + (NH4)2SO4

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

• He is a student learning the equation.

• He is a teacher grading the quiz.

• He is the narrator explaining the balancing process.

• He is a chemist conducting an experiment.

What is the final product formed along with copper(II) hydroxide?

• Ammonium phosphate

• Ammonium nitrate

• Ammonium sulfate

• Ammonium chloride