Electrolytes and Ionic Reactions

The video tutorial explains how to write the net ionic equation for the reaction between nitric acid (HNO3) and calcium carbonate (CaCO3). It begins with balancing the molecular equation, then identifies the states of each substance using a solubility table. The tutorial proceeds to write the complete ionic equation by splitting strong electrolytes into ions and concludes with the net ionic equation by removing spectator ions. The video emphasizes understanding the solubility and dissociation of compounds to accurately represent chemical reactions.

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

• Balance the molecular equation

• Identify spectator ions

• Split strong electrolytes into ions

• Determine the states of substances

What is the state of nitric acid (HNO3) in the reaction?

• Liquid

• Solid

• Aqueous

• Gas

According to the solubility rules, what is the state of calcium carbonate (CaCO3) in water?

• Aqueous

• Gas

• Solid

• Liquid

Which of the following is a strong electrolyte that dissociates completely in water?

• Water

• Nitric acid

• Calcium carbonate

• Carbon dioxide

What charge does the hydrogen ion (H+) have?

• 1+

• 2-

• 2+

• 1-

What is the charge of the nitrate ion (NO3-)?

• 1+

• 2+

• 1-

• 2-

What is the purpose of identifying spectator ions in a reaction?

• To balance the equation

• To calculate the reaction rate

• To determine the states of substances

• To simplify the net ionic equation

Which ions are considered spectator ions in the reaction between HNO3 and CaCO3?

• Hydrogen ions

• Nitrate ions

• Calcium ions

• Carbonate ions

What is the final net ionic equation for the reaction between HNO3 and CaCO3?

• Ca2+ + 2NO3- → Ca(NO3)2

• HNO3 + CaCO3 → Ca(NO3)2 + CO2 + H2O

• H2O + CO2 → H2CO3

• 2H+ + CaCO3 → Ca2+ + CO2 + H2O

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

• He is a chemist

• He is a spectator

• He is the narrator

• He is a student