Net Ionic Equations and Reactions

The video tutorial explains how to write a balanced net ionic equation for the reaction between sodium carbonate and strontium nitrate. It begins with balancing the molecular equation, followed by determining the solubility of the compounds involved. The tutorial then demonstrates how to write the complete ionic equation and identify spectator ions. Finally, it presents the net ionic equation, ensuring that both charge and atoms are balanced.

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

• Identify spectator ions

• Balance the molecular equation

• Write the net ionic equation directly

• Determine solubility of compounds

How do you balance the sodium atoms in the molecular equation of sodium carbonate and strontium nitrate?

• Add a coefficient of 2 in front of sodium carbonate

• Add a coefficient of 2 in front of strontium carbonate

• Add a coefficient of 2 in front of strontium nitrate

• Add a coefficient of 2 in front of sodium nitrate

Which of the following compounds is generally insoluble unless bonded to a group one element or ammonium ion?

• Strontium carbonate

• Strontium nitrate

• Sodium nitrate

• Sodium carbonate

What happens to strontium carbonate when sodium carbonate reacts with strontium nitrate?

• It forms a gas

• It dissolves in water

• It remains unchanged

• It forms a precipitate

What is the purpose of writing a complete ionic equation?

• To split strong electrolytes into ions

• To determine the solubility of compounds

• To identify the products of the reaction

• To balance the charges in the equation

Which ions are considered spectator ions in the reaction between sodium carbonate and strontium nitrate?

• Strontium and nitrate ions

• Sodium and carbonate ions

• Carbonate and strontium ions

• Sodium and nitrate ions

What is the net ionic equation derived from the reaction of sodium carbonate and strontium nitrate?

• CO3^2- + Sr^2+ → SrCO3

• 2Na+ + 2NO3^- → 2NaNO3

• Na2CO3 + Sr(NO3)2 → 2NaNO3 + SrCO3

• Na2CO3 + Sr^2+ → SrCO3 + 2Na+

Why is it important to ensure that the net ionic equation is balanced?

• To ensure the reaction is spontaneous

• To maintain charge and mass balance

• To confirm the reaction is endothermic

• To verify the reaction is exothermic

What is the net charge on both sides of the net ionic equation for sodium carbonate and strontium nitrate?

• 2+ on the reactant side, 2- on the product side

• 4+ on both sides

• Neutral on both sides

• 2- on the reactant side, 2+ on the product side

What is the role of Dr. B in the video?

• To demonstrate a chemical experiment

• To introduce new chemical elements

• To explain the concept of net ionic equations

• To discuss the history of chemistry