Net Ionic Equations and Reactions

The video tutorial explains how to balance the net ionic equation for calcium hydride (CaH2) reacting with water (H2O). It begins by balancing the molecular equation, ensuring the number of atoms for each element is equal on both sides. The tutorial then assigns states to each substance, considering excess water to determine if substances are aqueous or solid. The complete ionic equation is formed by splitting strong electrolytes into ions, and the net ionic equation is derived by removing spectator ions. The video concludes with a summary of the process.

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

• Split strong electrolytes into ions

• Determine the states of substances

• Balance the molecular equation

• Identify spectator ions

How many oxygen atoms are on the right side of the initial molecular equation?

• Four

• Three

• Two

• One

What happens to the hydrogen atoms when balancing the molecular equation?

• They remain balanced

• They become unbalanced

• They are ignored

• They are split into ions

What state is calcium hydride in during the reaction?

• Aqueous

• Solid

• Gas

• Liquid

Why is calcium hydroxide considered aqueous in this reaction?

• It is a weak base

• It is a solid

• It is a strong base

• It is a gas

What is the purpose of splitting strong electrolytes into ions?

• To identify spectator ions

• To calculate the pH

• To balance the equation

• To determine the reaction rate

Which substances are not split into ions in net ionic equations?

• Weak bases

• Strong acids

• Aqueous solutions

• Solids, liquids, and gases

What is unique about the components in the net ionic equation for this reaction?

• They are all gases

• They are all unique

• They are all solids

• They are all spectator ions

What would happen if the precise amounts of reactants were used in this reaction?

• The reaction would not occur

• The product would be a solid

• The product would be a gas

• The solution would be aqueous

Who is the presenter of the net ionic equation tutorial?

• Dr. D

• Dr. C

• Dr. B

• Dr. A