Net Ionic Equations and Solubility

The video tutorial guides viewers through writing a balanced net ionic equation for the reaction between cadmium chloride and ammonium sulfide. It begins with balancing the molecular equation, followed by identifying the solubility and states of the substances involved. The tutorial then explains how to split strong electrolytes into ions to form the complete ionic equation. Spectator ions are identified and removed to derive the net ionic equation. The video concludes with a summary of the balanced net ionic equation, ensuring charge and atom balance.

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

• Determine the states of substances

• Write the complete ionic equation

• Balance the molecular equation

• Identify spectator ions

How do you balance the molecular equation for the reaction between cadmium chloride and ammonium sulfide?

• Change the products

• Remove spectator ions

• Add more reactants

• Adjust the coefficients

What is the state of chlorides according to solubility rules?

• Very soluble

• Solid

• Gas

• Insoluble

What type of reaction occurs when an insoluble compound forms and falls to the bottom of the test tube?

• Synthesis reaction

• Decomposition reaction

• Precipitation reaction

• Combustion reaction

What is the charge of the cadmium ion in the complete ionic equation?

• 1+

• 1-

• 2-

• 2+

Which ions are not split apart in the net ionic equation?

• Solid ions

• Spectator ions

• Gas ions

• Aqueous ions

What is the purpose of identifying spectator ions in the complete ionic equation?

• To increase reactants

• To change the products

• To simplify the equation

• To balance the equation

What is the net charge of the balanced net ionic equation?

• 0

• 2-

• 1+

• 2+

Why is it important to ensure that the charges are balanced in the net ionic equation?

• To change the state of substances

• To ensure the equation is correct

• To increase reaction speed

• To form more products

What is the final step in deriving the net ionic equation?

• Determining solubility

• Removing spectator ions

• Writing the molecular equation

• Balancing atoms