Net Ionic Equations and Spectator Ions

The video tutorial explains how to write and balance net ionic equations, using the reaction between copper(II) chloride and potassium hydroxide as an example. It covers balancing the molecular equation, assigning states to substances, splitting compounds into ions for the complete ionic equation, and identifying spectator ions to derive the net ionic equation. The tutorial emphasizes the importance of charge and atom balance in the final equation.

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

• Balance the molecular equation

• Determine the states of compounds

• Split compounds into ions

• Identify spectator ions

Why do we put a '2' in front of potassium chloride in the molecular equation?

• To balance the coppers

• To balance the hydroxides

• To balance the chlorides

• To balance the entire equation

Which of the following compounds is generally insoluble?

• Potassium hydroxide

• Potassium chloride

• Copper(II) chloride

• Copper(II) hydroxide

What happens to the solid copper(II) hydroxide in the reaction?

• It remains as a solid precipitate

• It forms a gas

• It dissolves in water

• It reacts with potassium ions

What is the purpose of splitting compounds into ions in the complete ionic equation?

• To identify spectator ions

• To balance the equation

• To identify the precipitate

• To determine solubility

Which ions are considered spectator ions in this reaction?

• Potassium ions

• Hydroxide ions

• Chloride ions

• Copper ions

What is the role of potassium ions in the net ionic equation?

• They balance the equation

• They react with copper ions

• They are spectator ions

• They form a precipitate

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

• Negative

• Depends on the reactants

• Positive

• Zero

How do you ensure that the net ionic equation is balanced?

• By balancing both charges and atoms

• By balancing the atoms only

• By balancing the charges only

• By balancing the coefficients

What is the final product of the reaction between copper(II) chloride and potassium hydroxide?

• Potassium hydroxide

• Potassium chloride

• Copper(II) chloride

• Copper(II) hydroxide