Net Ionic Equations and Balancing

This video tutorial explains how to balance the net ionic equation for the reaction between sodium hydroxide (NaOH) and magnesium chloride (MgCl2). It begins with balancing the molecular equation, followed by determining the states of the substances involved. The tutorial then demonstrates how to split strong electrolytes into ions to form the complete ionic equation. Spectator ions are identified and crossed out to derive the net ionic equation. Finally, the video ensures that both charge and mass are balanced in the net ionic equation.

What is the first step in balancing the net ionic equation for NaOH and MgCl2?

• Balance the charges

• Balance the molecular equation

• Determine the states of substances

• Identify spectator ions

Why is magnesium hydroxide considered a solid in this reaction?

• It is highly soluble

• It is a strong base

• It forms a precipitate

• It is a gas

Which of the following is a strong electrolyte in the reaction?

• Sodium hydroxide

• Magnesium hydroxide

• Water

• Magnesium chloride

What is the charge of a sodium ion in the complete ionic equation?

• 2+

• 1+

• 1-

• 2-

In the complete ionic equation, which ions are considered spectator ions?

• Sodium and chloride ions

• Magnesium and hydroxide ions

• Hydroxide and chloride ions

• Sodium and magnesium ions

What remains after removing the spectator ions from the complete ionic equation?

• The net ionic equation

• Only chloride ions

• The molecular equation

• Only sodium ions

How is charge balance achieved in the net ionic equation?

• By ensuring equal positive and negative charges

• By changing the states of substances

• By adding more ions

• By removing all ions

What is the significance of balancing mass in the net ionic equation?

• It ensures the equation is correct

• It affects the solubility

• It determines the reaction speed

• It changes the reaction outcome

Why might the positive ion be listed first in net ionic equations?

• It looks aesthetically pleasing

• It is always more reactive

• It is a rule of chemistry

• It affects the reaction rate

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

• Balancing the molecular equation

• Checking for spectator ions

• Determining the states of substances

• Ensuring both charge and mass are balanced