Balancing Reactions with Ammonium Ions

This video tutorial demonstrates how to balance the chemical equation for ammonium carbonate reacting with calcium chloride. It introduces a technique using polyatomic ions to simplify the balancing process. The video provides a step-by-step guide to balancing the equation, ensuring all elements are accounted for on both sides. It concludes with a discussion on solubility rules and identifying the reaction products, highlighting the formation of a precipitate.

What is the initial step in balancing the equation for ammonium carbonate and calcium chloride?

• Treat ammonium ion as a single unit.

• Balance calcium atoms first.

• Ignore polyatomic ions.

• Start with chlorine atoms.

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

• Two

• One

• Four

• Three

What is the purpose of treating polyatomic ions as a single unit in this reaction?

• To simplify the balancing process.

• To increase the reaction rate.

• To change the reaction products.

• To decrease the solubility.

What coefficient is used to balance the ammonium ion in the equation?

• Three

• Two

• Four

• One

Which product in the reaction is insoluble and forms a precipitate?

• Calcium chloride

• Calcium carbonate

• Ammonium chloride

• Ammonium carbonate

According to solubility rules, which compound remains soluble in the reaction?

• Ammonium carbonate

• Calcium chloride

• Ammonium chloride

• Calcium carbonate

What is the state of calcium carbonate in the reaction?

• Liquid

• Gas

• Solid

• Aqueous

What is the final balanced equation for the reaction between ammonium carbonate and calcium chloride?

• NH4Cl + CaCO3 → NH4CO3 + CaCl2

• 2NH4Cl + CaCO3 → (NH4)2CO3 + CaCl2

• (NH4)2CO3 + CaCl2 → 2NH4Cl + CaCO3

• (NH4)2CO3 + CaCl2 → 2NH4Cl + CaCO3