Ionic Reactions and Spectator Ions

The video tutorial explains how to write the net ionic equation for the reaction between sodium hydroxide (NaOH) and potassium nitrate (KNO3). It begins by balancing the molecular equation and discussing the solubility of the compounds involved. The tutorial then demonstrates how to split the compounds into ions to form the complete ionic equation. It identifies spectator ions and concludes that there is no net ionic reaction, as the ions remain unchanged.

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

• Identify spectator ions

• Balance the molecular equation

• Determine the solubility of compounds

• Write the complete ionic equation

Why are compounds with sodium ions generally soluble?

• Sodium compounds are very soluble

• They form strong acids

• They are part of Group 2 elements

• Sodium compounds are always insoluble

Which of the following is a general rule for the solubility of hydroxides?

• Only hydroxides of transition metals are soluble

• Hydroxides are soluble in acidic solutions

• Hydroxides are insoluble unless in Group 1 or ammonium

• All hydroxides are soluble

Why are sodium hydroxide and potassium hydroxide considered strong bases?

• They are weak acids

• They are insoluble in water

• They completely dissociate in water

• They are part of Group 2 elements

What does it mean to split strong electrolytes into ions?

• To combine them into molecules

• To form a precipitate

• To dissolve them in non-polar solvents

• To separate them into individual ions

What are spectator ions?

• Ions that are insoluble

• Ions that form a precipitate

• Ions that do not change during the reaction

• Ions that participate in the reaction

What is the net ionic equation for the reaction between NaOH and KNO3?

• NaOH + KNO3 → NaNO3 + KOH

• There is no net ionic equation

• K+ + NO3- → KNO3

• Na+ + OH- → NaOH

What happens to the ions in the reaction between NaOH and KNO3?

• They react to form a gas

• They precipitate out of solution

• They remain unchanged as spectator ions

• They form a new compound

Which ions are considered spectator ions in the reaction between NaOH and KNO3?

• Na+ and OH-

• K+ and NO3-

• Na+ and K+

• OH- and NO3-

What conclusion can be drawn from the net ionic equation for NaOH and KNO3?

• A precipitate is formed

• A gas is released

• There is no chemical reaction

• A new compound is formed