Electrolytes and Net Ionic Equations

This video tutorial explains how to write a balanced net ionic equation for the reaction between magnesium and dilute sulfuric acid. It covers the steps of balancing the molecular equation, identifying the states of substances, writing the complete ionic equation, and deriving the net ionic equation by removing spectator ions. The tutorial emphasizes the importance of charge conservation and atom balance in the final equation.

What is the significance of using dilute sulfuric acid in the reaction with magnesium?

• It produces a different set of products.

• It speeds up the reaction.

• It changes the color of the solution.

• It prevents the reaction from occurring.

Why is it important to balance the molecular equation first?

• To ensure the reaction is safe.

• To make sure the equation is correct.

• To determine the states of the substances.

• To identify the spectator ions.

What state is assigned to magnesium in the reaction?

• Liquid

• Solid

• Gas

• Aqueous

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

• Water

• Hydrogen gas

• Sulfuric acid

• Magnesium

What is the role of spectator ions in a net ionic equation?

• They participate in the reaction.

• They change the state of the reactants.

• They balance the charge.

• They are removed from the equation.

Which ion is identified as a spectator ion in this reaction?

• Magnesium ion

• Hydrogen ion

• Sulfate ion

• Oxygen ion

Why don't we split gases in net ionic equations?

• They do not dissociate into ions.

• They are not visible.

• They are already balanced.

• They are not involved in the reaction.

What ensures that the net ionic equation is balanced?

• The number of atoms on each side.

• The color of the solution.

• The temperature of the reaction.

• The speed of the reaction.

What is conserved in a balanced net ionic equation?

• Neither mass nor charge

• Both mass and charge

• Charge only

• Mass only

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

• Magnesium chloride and oxygen

• Magnesium oxide and water

• Magnesium sulfate and hydrogen gas

• Magnesium nitrate and nitrogen gas