Net Ionic Equations and Reactions

The video tutorial explains how to write a net ionic equation for the reaction between potassium sulfide (K2S) and cobalt(II) chloride (CoCl2). It begins by balancing the molecular equation and identifying the states of each compound using solubility rules. The tutorial then demonstrates how to split strong electrolytes into ions to form the complete ionic equation, and how to identify and remove spectator ions to derive the net ionic equation. The video concludes by ensuring that the net ionic equation is balanced in terms of both charge and atoms.

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

• Write the complete ionic equation

• Determine the solubility of compounds

• Balance the molecular equation

• Identify the spectator ions

Which of the following is generally soluble in water?

• Transition metal sulfides

• Cobalt(II) sulfide

• Sulfide compounds

• Potassium compounds

What is the role of solubility rules in writing net ionic equations?

• To write the complete ionic equation

• To determine which compounds dissociate into ions

• To identify spectator ions

• To balance the molecular equation

What happens when a transition metal reacts with a sulfide ion?

• It forms a soluble compound

• It forms an aqueous solution

• It forms a gas

• It forms an insoluble precipitate

Which compound forms the precipitate in the reaction between K2S and CoCl2?

• Potassium chloride

• Cobalt(II) chloride

• Cobalt(II) sulfide

• Potassium sulfide

What is the purpose of splitting strong electrolytes into ions?

• To determine the net ionic equation

• To balance the equation

• To identify the precipitate

• To write the complete ionic equation

Which ions are considered spectator ions in a reaction?

• Ions that form the precipitate

• Ions that do not participate in the reaction

• Ions that are only in the products

• Ions that are only in the reactants

What is the net charge of the reactants in the net ionic equation for K2S and CoCl2?

• Zero

• Neutral

• Negative

• Positive

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

• To determine the solubility of compounds

• To ensure the law of conservation of mass is followed

• To confirm the reaction occurs

• To identify the spectator ions

What is the final step in writing a net ionic equation?

• Balancing the molecular equation

• Ensuring charge and atom balance

• Writing the complete ionic equation

• Identifying the precipitate