Net Ionic Equations and Spectator Ions

The video tutorial explains how to write a balanced net ionic equation for the reaction between barium nitrate and potassium phosphate. It begins by balancing the molecular equation, then discusses the solubility rules to determine the states of substances. The tutorial proceeds to form the complete ionic equation by splitting strong electrolytes into ions. Finally, it derives the net ionic equation by removing spectator ions and ensures that charge is conserved, resulting in a balanced net ionic equation.

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

• Identify spectator ions

• Write the complete ionic equation

• Determine the solubility of compounds

• Balance the molecular equation

How many nitrates are needed to balance the molecular equation for Ba(NO3)2 + K3PO4?

• Four

• Two

• Six

• Eight

According to solubility rules, which of the following is generally insoluble?

• Barium phosphate

• Potassium compounds

• Group 1 phosphates

• Nitrates

What state is assigned to barium phosphate in the reaction?

• Aqueous

• Solid

• Gas

• Liquid

In the complete ionic equation, what is the charge of the barium ion?

• 3+

• 1+

• 2+

• 0

How many potassium ions are present in the complete ionic equation?

• Six

• Eight

• Two

• Four

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

• They participate in the reaction

• They balance the charge

• They change the state of the reaction

• They are removed from the net ionic equation

Which ions are considered spectator ions in this reaction?

• Barium and phosphate

• Potassium and nitrate

• Nitrate and phosphate

• Barium and potassium

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

• Negative

• Positive

• Undefined

• Zero

What ensures that the net ionic equation is correctly balanced?

• Equal number of atoms on both sides

• Presence of spectator ions

• Different charges on both sides

• Unequal number of atoms