Net Ionic Equations and Reactions

The video tutorial explains how to write a balanced net ionic equation for the reaction between magnesium chloride (MgCl2) and sodium phosphate (Na3PO4). It begins by balancing the molecular equation, then assigns states to each substance based on solubility rules. The tutorial proceeds to split strong electrolytes into ions and identifies spectator ions to write the complete and net ionic equations. Finally, it ensures that both the charges and atoms are balanced in the net ionic equation.

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

• Determine the solubility of compounds

• Balance the molecular equation

• Split compounds into ions

• Identify spectator ions

How do you determine the state of magnesium chloride in a reaction?

• By checking its color

• By using solubility rules

• By measuring its pH

• By observing its reaction with water

What is the state of sodium phosphate when dissolved in water?

• Gas

• Aqueous

• Liquid

• Solid

Which ions are formed when magnesium chloride is dissolved in water?

• Mg2+ and Cl-

• Na+ and PO4^3-

• Mg+ and Cl2

• Na+ and Cl-

What is the charge of the phosphate ion in the reaction?

• 3-

• 2-

• 4-

• 1-

Why don't we split apart solids in net ionic equations?

• They do not dissolve in water

• They are already balanced

• They are not reactive

• They are spectator ions

What are spectator ions?

• Ions that participate in the reaction

• Ions that do not change during the reaction

• Ions that form a precipitate

• Ions that are gases

What should be checked to ensure the net ionic equation is correct?

• Color and smell

• Volume and mass

• Temperature and pressure

• Balance of atoms and charge

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

• Variable

• Positive

• Neutral

• Negative

What happens if the atoms are not balanced in the net ionic equation?

• The precipitate dissolves

• The solution changes color

• The reaction is faster

• The equation is incorrect