Net Ionic Equations and Solubility

This video tutorial explains how to balance the net ionic equation for the reaction between potassium carbonate (K2CO3) and iron(III) chloride (FeCl3). It begins with balancing the molecular equation, followed by determining the solubility and states of the substances involved. The tutorial then proceeds to form the complete ionic equation by splitting strong electrolytes into ions. Finally, it identifies and removes spectator ions to derive the net ionic equation, ensuring both atom and charge balance.

What is the first step in balancing the net ionic equation for potassium carbonate and iron(III) chloride?

• Determine the solubility of each compound.

• Write the net ionic equation.

• Balance the molecular equation.

• Identify spectator ions.

Why is potassium carbonate considered soluble in water?

• Because it forms a precipitate.

• Because potassium is a group 1 element.

• Because carbonates are generally soluble.

• Because it reacts with iron(III) chloride.

What is the state of iron(III) carbonate in the reaction?

• Solid

• Gas

• Aqueous

• Liquid

What is the charge of the potassium ion in the complete ionic equation?

• 1-

• 1+

• 2+

• 2-

How many chloride ions are present in the reactants of the complete ionic equation?

• Five

• Six

• Four

• Three

What are spectator ions in a chemical reaction?

• Ions that form a precipitate.

• Ions that participate in the reaction.

• Ions that do not change during the reaction.

• Ions that are insoluble.

Which ions are crossed out as spectator ions in this reaction?

• Potassium and iron ions

• Carbonate and chloride ions

• Potassium and chloride ions

• Iron and carbonate ions

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

• Positive

• Negative

• Zero

• Variable

Why is it important to balance both atoms and charges in a net ionic equation?

• To maintain the law of conservation of mass and charge.

• To confirm the reaction is endothermic.

• To ensure the reaction is spontaneous.

• To predict the color change in the reaction.

What might be a reason to write the positive ion first in a net ionic equation?

• It is a requirement by IUPAC.

• It is necessary for balancing charges.

• It changes the outcome of the reaction.

• It makes the equation look more organized.