Net Ionic Equations and Charge Conservation

This video tutorial explains how to write a balanced net ionic equation for the reaction between potassium oxide (K2O) and water (H2O). It covers balancing the molecular equation, assigning states to substances, and dissociating strong electrolytes. The tutorial also demonstrates forming complete and net ionic equations, highlighting the absence of spectator ions. Finally, it ensures charge and atom balance, confirming the equation's correctness.

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

• Assign states to each substance

• Split strong electrolytes into ions

• Identify spectator ions

• Balance the molecular equation

How many potassium atoms are present in the balanced molecular equation for K2O + H2O?

• Four

• One

• Three

• Two

What state is assigned to potassium oxide (K2O) in the reaction?

• Liquid

• Gas

• Aqueous

• Solid

Why is KOH considered a strong electrolyte?

• It is a solid at room temperature

• It dissociates completely into ions

• It does not dissolve in water

• It is a weak base

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

• +2

• 0

• +1

• -1

Which substances are not split into ions in net ionic equations?

• Weak bases

• Gases

• Solids and liquids

• Strong acids

What is the net charge on the right side of the net ionic equation for K2O + H2O?

• +2

• +1

• -2

• 0

What is the role of spectator ions in a net ionic equation?

• They form new compounds

• They change the charge balance

• They are removed from the equation

• They participate in the reaction

How is charge conservation verified in a net ionic equation?

• By counting atoms

• By checking the net charge on both sides

• By balancing coefficients

• By identifying spectator ions

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

• Identifying all products

• Counting the number of molecules

• Ensuring all substances are aqueous

• Verifying both charge and atom balance