Net Ionic Equations and Weak Acids

The video tutorial explains how to write and balance the net ionic equation for the reaction between strontium hydroxide and phosphoric acid. It begins with balancing the molecular equation, assigning states to each substance, and then proceeds to write the complete ionic equation. The tutorial highlights the importance of recognizing weak acids and not splitting them into ions. Finally, it derives the net ionic equation, ensuring that charges and atoms are balanced.

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

• Identify spectator ions

• Balance the molecular equation

• Write the complete ionic equation

• Determine the states of substances

How many strontium atoms are needed to balance the molecular equation?

• One

• Three

• Four

• Two

What is the state of strontium hydroxide in the reaction?

• Aqueous

• Gas

• Liquid

• Solid

What type of compound is strontium phosphate in the reaction?

• Liquid

• Aqueous

• Gas

• Solid

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

• It is insoluble

• It is a weak electrolyte

• It is a gas

• It is a strong acid

Which ions are not split in the net ionic equation?

• All ions

• Strong electrolytes

• Weak electrolytes

• Spectator ions

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

• Positive

• Negative

• Variable

• Zero

What is the role of water in the net ionic equation?

• Product

• Reactant

• Spectator ion

• Catalyst

What is the significance of recognizing phosphoric acid as a weak acid?

• It is a strong electrolyte

• It is not split into ions

• It does not dissolve

• It is always a gas

What ensures the atoms are balanced in the net ionic equation?

• Equal number of ions

• Equal number of atoms

• Equal number of charges

• Equal number of molecules