Spectator Ions and Net Ionic Equations

This video tutorial explains how to balance the net ionic equation for the reaction between calcium and iron(III) nitrate. It covers the steps to balance the molecular equation, determine the states of substances, and write the complete ionic equation. The tutorial also demonstrates how to identify and remove spectator ions to obtain the net ionic equation, ensuring that both charge and atoms are balanced.

What type of reaction is occurring between calcium and iron(III) nitrate?

• Single displacement

• Double displacement

• Synthesis

• Decomposition

Why is it necessary to balance the molecular equation first?

• To ensure the reaction is spontaneous

• To make sure the equation is aesthetically pleasing

• To ensure the number of atoms for each element is equal on both sides

• To determine the limiting reactant

What state is assigned to calcium in the reaction?

• Aqueous

• Gas

• Liquid

• Solid

Which of the following is a characteristic of nitrates in this reaction?

• They are insoluble

• They are gases

• They are very soluble

• They are liquids

What is the charge of the iron ion in iron(III) nitrate?

• 2+

• 1+

• 3+

• 4+

How many nitrate ions are present in the complete ionic equation?

• Eight

• Six

• Four

• Two

What is the purpose of identifying spectator ions?

• To determine the reaction temperature

• To simplify the equation by removing ions that do not participate in the reaction

• To increase the reaction rate

• To identify the limiting reactant

Which ion is identified as a spectator ion in this reaction?

• Calcium ion

• Iron ion

• Nitrate ion

• Hydrogen ion

What ensures that the net ionic equation is correctly balanced?

• The equation is written in alphabetical order

• The equation includes all possible ions

• The charges and number of atoms are balanced on both sides

• The equation is written in reverse

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

• Diluting the solution

• Heating the solution

• Adding more reactants

• Crossing out spectator ions