Net Ionic Equations and Spectator Ions

This video tutorial guides viewers through the process of writing a balanced net ionic equation for the reaction between mercury(II) nitrate and sodium phosphate. It covers balancing the molecular equation, determining the states of substances using solubility rules, and forming the complete ionic equation by splitting strong electrolytes into ions. The tutorial also addresses common errors in balancing equations and highlights the importance of charge balance and atom conservation in the net ionic equation.

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

• Write the complete ionic equation

• Identify spectator ions

• Balance the molecular equation

• Determine the solubility of compounds

Why is mercury(II) phosphate considered a solid in this reaction?

• It is a strong electrolyte

• It is soluble in water

• Phosphates are generally insoluble

• It reacts with sodium

What is the purpose of writing the states of each substance in a reaction?

• To calculate the reaction rate

• To find the temperature of the reaction

• To identify the phase of each compound

• To determine the color of the compounds

What is the role of solubility rules in writing net ionic equations?

• To determine the reaction speed

• To calculate the reaction temperature

• To identify the color of compounds

• To decide which compounds dissociate into ions

What is the charge of the mercury ion in this reaction?

• 1+

• 4+

• 3+

• 2+

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

• 3-

• 2-

• 1-

• 4-

Which ions are considered spectator ions in this reaction?

• Mercury and nitrate ions

• Mercury and phosphate ions

• Sodium and nitrate ions

• Sodium and phosphate ions

What happens to the spectator ions in the net ionic equation?

• They form a new compound

• They are removed from the equation

• They are included in the final equation

• They change their charge

What is the net charge on both sides of the net ionic equation?

• Varies

• Negative

• Zero

• Positive

How can errors in the net ionic equation be identified?

• By checking the color of the solution

• By ensuring the charges and atoms are balanced

• By measuring the temperature

• By observing the reaction speed