Net Ionic Equations and Spectator Ions

The video tutorial explains how to write a balanced net ionic equation for the reaction between hydrofluoric acid (HF) and potassium hydroxide (KOH). It begins with balancing the molecular equation, then determining the states of each substance. The tutorial covers splitting strong electrolytes into ions to form the complete ionic equation. It concludes with deriving the net ionic equation by removing spectator ions and ensuring conservation of charge and mass.

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

• Balance the molecular equation

• Identify spectator ions

• Write the states of substances

• Split strong electrolytes into ions

Which of the following is true about hydrofluoric acid (HF) in this reaction?

• It is a weak base

• It is a strong acid

• It is a weak acid

• It is a strong base

What is the state of potassium hydroxide (KOH) in the reaction?

• Aqueous

• Gas

• Liquid

• Solid

Why is HF not split into ions in the complete ionic equation?

• It is a weak acid

• It is a strong base

• It is a weak base

• It is a strong acid

Which ions are considered spectator ions in this reaction?

• Potassium ions

• Hydroxide ions

• Fluoride ions

• Hydrogen ions

What happens to spectator ions in the net ionic equation?

• They are converted to gases

• They are removed from the equation

• They are included in the equation

• They are dissolved in water

What is conserved in the final net ionic equation?

• Only mass

• Only charge

• Both mass and charge

• Neither mass nor charge

How many hydrogen atoms are present on each side of the final net ionic equation?

• One

• Two

• Three

• Four

What is the charge on the fluoride ion in the net ionic equation?

• +1

• 0

• -1

• +2

Which of the following is true about the conservation of mass in the net ionic equation?

• Mass is conserved for all elements

• Mass is conserved only for hydrogen

• Mass is not conserved

• Mass is conserved only for oxygen