Understanding Net Ionic Equations

This video tutorial guides viewers through writing a balanced net ionic equation for the reaction between sodium hydroxide (NaOH) and carbonic acid (H2CO3). It begins with balancing the molecular equation, then discusses the states of the substances involved, highlighting their solubility and dissociation properties. The tutorial proceeds to form the complete ionic equation by splitting strong electrolytes into ions. Spectator ions are identified and removed to derive the net ionic equation. The video concludes by ensuring charge conservation and atom balance in the final equation.

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

• Split strong electrolytes into ions

• Determine the states of substances

• Balance the molecular equation

• Identify spectator ions

Which of the following is true about sodium hydroxide in the reaction?

• It forms a precipitate

• It is a strong base and dissociates completely

• It is a weak base and remains undissociated

• It is insoluble in water

Why is carbonic acid considered a weak electrolyte?

• It dissociates completely in water

• It forms a strong acid

• It does not dissociate into ions

• It is insoluble in water

What is the significance of memorizing strong acids and bases?

• To know which substances dissociate completely

• To determine solubility

• To balance molecular equations

• To identify weak acids

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

• Sodium ions

• Hydrogen ions

• Hydroxide ions

• Carbonate ions

What is the role of spectator ions in a chemical reaction?

• They form new compounds

• They remain unchanged and do not participate

• They change the state of the reaction

• They participate in the reaction

How is the net ionic equation derived from the complete ionic equation?

• By balancing the charges

• By adding more ions

• By changing the states of substances

• By removing spectator ions

What must be conserved in a balanced net ionic equation?

• Neither atoms nor charge

• Only the number of atoms

• Both the number of atoms and the charge

• Only the charge

What is the charge on the carbonate ion in the net ionic equation?

• 2+

• 2-

• 1-

• 1+

What is the final step in ensuring the net ionic equation is correct?

• Checking the solubility of products

• Ensuring the equation is balanced in terms of atoms and charge

• Identifying all spectator ions

• Rewriting the molecular equation