Chemical Reactions and Ionic Equations

The video tutorial explains how to write a balanced net ionic equation for the reaction between sulfuric acid (H2SO4) and zinc (Zn). It begins by balancing the molecular equation, identifying the states of each substance, and then proceeds to write the complete ionic equation by splitting strong electrolytes into their ions. The tutorial concludes by deriving the net ionic equation by removing spectator ions, ensuring that the charges and atoms are balanced. The video emphasizes the importance of understanding solubility rules and the properties of strong acids and transition metals.

What is the first step in writing a balanced net ionic equation?

• Identify spectator ions

• Write the complete ionic equation

• Balance the molecular equation

• Determine the states of substances

Which of the following is a strong electrolyte in the reaction?

• Zinc

• Hydrogen gas

• Zinc sulfate

• Sulfuric acid

What is the state of zinc sulfate in the reaction?

• Solid

• Liquid

• Aqueous

• Gas

How do you determine the charge of hydrogen ions in the reaction?

• By observing the reaction

• By remembering it is in Group 1

• By checking the periodic table

• By using a solubility chart

What is the charge of the sulfate ion?

• 2+

• 1-

• 2-

• 1+

What is the purpose of identifying spectator ions?

• To determine the states of substances

• To simplify the net ionic equation

• To balance the equation

• To find the complete ionic equation

Which ion is a spectator ion in this reaction?

• None

• Sulfate ion

• Zinc ion

• Hydrogen ion

What is conserved in the net ionic equation?

• Mass only

• Charge only

• Both mass and charge

• Neither mass nor charge

What is the final product of the reaction between sulfuric acid and zinc?

• Zinc oxide and water

• Zinc nitrate and nitrogen gas

• Zinc sulfate and hydrogen gas

• Zinc chloride and oxygen

What is the net ionic equation for the reaction?

• Zn + SO₄²⁻ → ZnSO₄

• H₂SO₄ + Zn → ZnSO₄ + H₂

• 2H⁺ + Zn → Zn²⁺ + H₂

• 2H⁺ + SO₄²⁻ + Zn → ZnSO₄ + H₂