Net Ionic Equations and Balancing

The video tutorial explains how to write a balanced net ionic equation for the reaction between calcium carbonate and hydrobromic acid. It begins by balancing the molecular equation, then determines the states of each substance involved. The tutorial proceeds to split strong electrolytes into their ions to form the complete ionic equation. Finally, it identifies and removes spectator ions to derive the net ionic equation, ensuring that charges and atoms are balanced on both sides.

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

• Determine the states of substances

• Balance the molecular equation

• Split strong electrolytes into ions

• Identify spectator ions

How do you balance the number of bromine atoms in the molecular equation?

• Add a coefficient of 2 in front of H2O

• Add a coefficient of 2 in front of CO2

• Add a coefficient of 2 in front of CaCO3

• Add a coefficient of 2 in front of HBr

Which of the following is generally insoluble?

• Hydrobromic acid

• Calcium bromide

• Calcium carbonate

• Water

Why is hydrobromic acid considered aqueous in the reaction?

• It is a strong acid that dissociates in water

• It is a weak acid

• It is a solid at room temperature

• It is insoluble in water

What is the state of calcium bromide in the reaction?

• Liquid

• Aqueous

• Gas

• Solid

What is the purpose of splitting strong electrolytes into ions?

• To identify spectator ions

• To form the complete ionic equation

• To balance the molecular equation

• To determine the states of substances

Which ions are not split apart in net ionic equations?

• All ions are split

• Gas and liquid ions

• Solid ions

• Aqueous ions

What are spectator ions?

• Ions that are gases

• Ions that are insoluble

• Ions that do not change during the reaction

• Ions that participate in the reaction

What ensures the net ionic equation is balanced?

• Equal number of atoms on both sides

• Equal number of molecules on both sides

• Equal number of electrons on both sides

• Equal number of ions on both sides

What is the charge balance in the net ionic equation for CaCO3 and HBr?

• No charges on either side

• Unequal charges on both sides

• Two negative charges on both sides

• Two positive charges on both sides