Net Ionic Equations and Spectator Ions

The video tutorial explains how to balance a net ionic equation for the reaction between strontium hydroxide and hydrobromic acid. It begins with balancing the molecular equation, assigning states to each substance, and then splitting strong electrolytes into ions to form the complete ionic equation. Spectator ions are identified and removed to derive the net ionic equation. The tutorial concludes by ensuring the equation is balanced in terms of charge and atoms.

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

• Write the complete ionic equation

• Balance the molecular equation

• Identify spectator ions

• Determine the states of substances

Which of the following is considered a strong base?

• Hydrobromic acid

• Strontium hydroxide

• Strontium bromide

• Water

What is the state of strontium bromide in the reaction?

• Solid

• Liquid

• Aqueous

• Gas

What do you obtain by splitting strong electrolytes into their ions?

• Balanced equation

• Molecular equation

• Net ionic equation

• Complete ionic equation

Why do we not split water into ions in net ionic equations?

• It is a gas

• It is a strong electrolyte

• It is a weak acid

• It is a liquid

What are spectator ions?

• Ions that are gases

• Ions that form a precipitate

• Ions that do not change during the reaction

• Ions that participate in the reaction

Which ions are crossed out to derive the net ionic equation?

• All ions

• Only cations

• Spectator ions

• Only anions

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

• Positive

• Negative

• Zero

• Depends on the reaction

What should be balanced in a net ionic equation besides the charge?

• Pressure

• Temperature

• Volume

• Atoms

What is the convention regarding coefficients in a balanced net ionic equation?

• Always write the coefficient

• Never write the coefficient

• Write the coefficient only if it is greater than one

• Reduce coefficients to the lowest whole number