Net Ionic Equations and Ionic Charges

The video tutorial explains how to write the net ionic equation for the reaction between zinc and hydrochloric acid. It begins with balancing the molecular equation, then identifies the states of each substance involved. The tutorial proceeds to dissociate soluble compounds into ions, taking into account their charges. It then constructs the complete ionic equation, considering coefficients and subscripts. Finally, the tutorial demonstrates how to identify and cross out spectator ions to arrive at the net ionic equation.

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

• Identify spectator ions

• Balance the molecular equation

• Write the complete ionic equation

• Determine the states of substances

What is the state of zinc in the reaction with hydrochloric acid?

• Liquid

• Solid

• Gas

• Aqueous

Which of the following substances is usually aqueous in the reaction?

• Hydrochloric acid

• Zinc chloride

• Hydrogen gas

• Zinc

What charge does a hydrogen ion typically have?

• 0

• 1+

• 2+

• 1-

What is the charge of a zinc ion in this reaction?

• 2-

• 1-

• 2+

• 1+

Which ion is considered a spectator ion in the reaction?

• Hydrogen gas

• Chloride ion

• Hydrogen ion

• Zinc ion

What is the purpose of writing a complete ionic equation?

• To determine the net ionic equation

• To show all ions present in the reaction

• To balance the molecular equation

• To identify the states of substances

What do you do with spectator ions when writing the net ionic equation?

• Ignore them completely

• Cross them out

• Double their coefficients

• Include them in the final equation

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

• Balancing the molecular equation

• Writing the complete ionic equation

• Crossing out spectator ions

• Determining the states of substances

Which of the following is not a step in writing a net ionic equation?

• Writing the complete ionic equation

• Balancing the molecular equation

• Determining the reaction temperature

• Identifying spectator ions