Net Ionic Equations and Solubility

The video tutorial explains how to write the balanced net ionic equation for the reaction between calcium hydroxide and phosphoric acid. It begins with balancing the molecular equation, then discusses the states of each substance, highlighting the solubility and dissociation properties. The tutorial proceeds to form the complete ionic equation by splitting strong electrolytes into ions and concludes with the net ionic equation, emphasizing the absence of spectator ions. Key points include the solubility of calcium phosphate and the weak electrolyte nature of phosphoric acid.

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

• Write the complete ionic equation

• Determine the solubility of compounds

• Balance the molecular equation

• Identify the spectator ions

Why is calcium hydroxide considered a strong base?

• It is a weak electrolyte

• It forms a precipitate

• It dissociates completely into ions

• It is highly soluble in water

What happens to phosphoric acid in water?

• It forms a gas

• It dissolves but does not dissociate much

• It remains as a solid

• It completely dissociates into ions

What is the state of calcium phosphate when formed in the reaction?

• Liquid

• Gas

• Aqueous

• Solid

Which of the following is not split into ions in the complete ionic equation?

• Water

• Phosphoric acid

• Hydroxide ions

• Calcium ions

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

• They are removed from the equation

• They participate in the reaction

• They change the state of the reactants

• They form the precipitate

Why is phosphoric acid considered a weak electrolyte?

• It does not dissolve in water

• It dissociates completely

• It dissolves but does not dissociate much

• It forms a strong base

What is the significance of calcium phosphate being insoluble?

• It remains as a solid precipitate

• It forms a gas

• It dissociates into ions

• It dissolves completely in water

Which compound is not split into ions in the net ionic equation?

• Calcium hydroxide

• Phosphoric acid

• Calcium phosphate

• Water

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

• Identifying spectator ions

• Balancing the molecular equation

• Adding states to each substance

• Writing the complete ionic equation