Net Ionic Equations and Spectator Ions

The video tutorial explains how to write a balanced net ionic equation for the reaction between calcium chloride (CaCl2) and zinc sulfate (ZnSO4). It begins by balancing the molecular equation and determining the states of the compounds involved. The tutorial then demonstrates how to split strong electrolytes into their ions to form the complete ionic equation. Spectator ions are identified and removed to derive the net ionic equation. The video concludes by ensuring that the charges and atoms are balanced in the final net ionic equation.

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

• Balance the molecular equation

• Check for charge conservation

• Identify spectator ions

• Write the complete ionic equation

Which of the following compounds is generally insoluble?

• Ammonium sulfate

• Sodium chloride

• Calcium sulfate

• Potassium nitrate

What is the role of calcium sulfate in the reaction?

• It acts as a solvent

• It forms a precipitate

• It is a spectator ion

• It is a catalyst

Why is it important to write the states of each substance in a reaction?

• To calculate the concentration

• To determine the reaction speed

• To balance the equation

• To identify the precipitate

What happens to strong electrolytes in a solution?

• They split into ions

• They form a solid precipitate

• They evaporate

• They remain as molecules

What is the purpose of identifying spectator ions?

• To balance the equation

• To simplify the net ionic equation

• To determine solubility

• To calculate molarity

Which ions are considered spectator ions in the reaction between calcium chloride and zinc sulfate?

• Sulfate ions

• Calcium ions

• Chloride ions

• Zinc ions

What must be conserved in a balanced net ionic equation?

• Mass only

• Charge only

• Both mass and charge

• Neither mass nor charge

How do you verify that a net ionic equation is balanced?

• Write the molecular equation

• Identify the spectator ions

• Count the atoms and charges

• Check the solubility rules

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

• Positive

• Depends on the reaction

• Negative

• Zero