Ionic Reactions and Equations

The video tutorial explains how to write and balance the molecular equation for the reaction between copper(II) chloride (CoCl2) and sodium hydroxide (NaOH). It covers balancing the equation, determining the states of substances using solubility rules, and splitting strong electrolytes into ions to form the complete ionic equation. The tutorial then demonstrates how to derive the net ionic equation by removing spectator ions, resulting in a clear understanding of the chemical reaction process.

What is the first step in balancing the molecular equation for the reaction between copper(II) chloride and sodium hydroxide?

• Balance the hydroxide ions

• Balance the chlorine atoms

• Balance the cobalt atoms

• Balance the sodium atoms

According to solubility rules, which of the following is generally soluble?

• Sodium chloride

• Cobalt hydroxide

• Copper(II) chloride

• Sodium hydroxide

What is the state of sodium hydroxide in the reaction?

• Solid

• Liquid

• Gas

• Aqueous

What is the role of a solubility chart in writing chemical equations?

• To balance chemical equations

• To predict the solubility of compounds

• To identify spectator ions

• To determine the charge of ions

What is the charge of the cobalt ion in cobalt(II) chloride?

• 1+

• 2+

• 1-

• 3+

What is the charge of the hydroxide ion?

• 2-

• 1-

• 2+

• 1+

Which ions are considered spectator ions in the reaction between copper(II) chloride and sodium hydroxide?

• Hydroxide ions

• Cobalt ions

• Chloride ions

• Sodium ions

Why do we not split solids in net ionic equations?

• They are spectator ions

• They are already balanced

• They do not dissociate into ions

• They are not reactive

What is the final product formed as a precipitate in the reaction?

• Sodium hydroxide

• Sodium chloride

• Cobalt(II) hydroxide

• Copper(II) hydroxide

What is the significance of the net ionic equation?

• It shows all reactants and products

• It highlights the formation of precipitates

• It balances the molecular equation

• It includes all spectator ions