Net Ionic Equations and Solubility

The video tutorial explains how to write a balanced net ionic equation for the reaction between magnesium sulfate and ammonium hydroxide. It begins by introducing the concept of net ionic equations and proceeds to balance the molecular equation. The tutorial then identifies the states of each substance, noting that magnesium hydroxide is insoluble and forms a precipitate. The complete ionic equation is written, and spectator ions are identified and removed to derive the net ionic equation. The tutorial concludes by verifying the balance of charges and atoms in the final equation.

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

• Write the complete ionic equation.

• Identify the spectator ions.

• Balance the molecular equation.

• Determine the states of the reactants.

When balancing the molecular equation, why is it necessary to adjust the coefficients?

• To ensure the reaction is spontaneous.

• To determine the solubility of the compounds.

• To make sure the number of atoms for each element is equal on both sides.

• To identify the precipitate formed.

Which of the following is generally soluble in water?

• Magnesium hydroxide

• Ammonium ion compounds

• Sulfate ion compounds

• All hydroxides

What is the state of magnesium hydroxide in the reaction?

• Gas

• Liquid

• Aqueous

• Solid

What is the purpose of writing the complete ionic equation?

• To determine the solubility of the compounds.

• To split strong electrolytes into their ions.

• To balance the charges in the reaction.

• To identify the precipitate formed.

Which ions are considered spectator ions in this reaction?

• Magnesium ions

• Ammonium ions

• Sulfate ions

• Hydroxide ions

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

• Depends on the reactants

• Negative

• Zero

• Positive

What happens to the magnesium hydroxide in the reaction?

• It precipitates as a solid.

• It remains as a liquid.

• It forms a gas.

• It dissolves completely.

Why is it important to remove spectator ions when writing the net ionic equation?

• To simplify the equation and focus on the actual chemical change.

• To ensure all ions are included.

• To determine the solubility of the compounds.

• To balance the molecular equation.

What is the final step in deriving the net ionic equation?

• Balancing the molecular equation.

• Writing the complete ionic equation.

• Identifying the spectator ions.

• Ensuring the equation is balanced in terms of charge and atoms.