Balancing Net Ionic Equations

The video tutorial explains how to write and balance the net ionic equation for the reaction between copper metal and concentrated sulfuric acid. It covers the importance of using concentrated sulfuric acid, the steps to balance the molecular equation, and how to write the states and split strong electrolytes into ions. The tutorial also demonstrates forming the complete ionic equation, identifying and removing spectator ions, and ensuring the net ionic equation is balanced in terms of charge and atoms.

Why is concentrated sulfuric acid necessary for the reaction with copper metal?

• It changes the color of the solution.

• It increases the reaction rate.

• It provides a higher temperature.

• Dilute acid would not react.

What is the first step in balancing a net ionic equation?

• Split strong electrolytes into ions.

• Determine the states of substances.

• Balance the molecular equation.

• Identify spectator ions.

Which state is assigned to copper metal in the reaction?

• Liquid

• Solid

• Gas

• Aqueous

What is the state of sulfur dioxide in the reaction?

• Solid

• Liquid

• Aqueous

• Gas

What is the purpose of splitting strong electrolytes into ions?

• To identify the products.

• To form the complete ionic equation.

• To balance the molecular equation.

• To determine the reaction rate.

How do you handle spectator ions in the complete ionic equation?

• Add them to both sides.

• Cross them out from both sides.

• Double their quantity.

• Ignore them completely.

What adjustment is made to balance the sulfate ions in the net ionic equation?

• Add water molecules.

• Remove all sulfate ions.

• Change the coefficient of sulfate ions.

• Add more sulfate ions.

What should be checked to ensure the net ionic equation is balanced?

• Presence of gas

• Color of the solution

• Temperature of the reaction

• Charge and atom balance

What is the overall charge on the product side of the balanced net ionic equation?

• Zero

• Two minus

• Two plus

• Four plus

What is the significance of the balanced net ionic equation?

• It shows the color change.

• It represents the actual chemical change.

• It indicates the reaction rate.

• It predicts the temperature change.