Net Ionic Equations and Reactions

The video tutorial explains how to write and balance the net ionic equation for the reaction between zinc chloride (ZnCl2) and sodium phosphate (Na3PO4). It begins with balancing the molecular equation, followed by determining the solubility and states of the compounds involved. The tutorial then proceeds to split the strong electrolytes into their ions, forming the complete ionic equation. Spectator ions are identified and removed to derive the net ionic equation. The video concludes by ensuring that both the atoms and charges are balanced in the final equation.

What is the first step in balancing the molecular equation for the reaction between zinc chloride and sodium phosphate?

• Balance the phosphates

• Balance the sodium atoms

• Balance the zinc atoms

• Balance the chlorides

Which of the following compounds is insoluble in water?

• Zinc phosphate

• Sodium phosphate

• Zinc chloride

• Sodium chloride

What is the state of sodium phosphate in the reaction?

• Gas

• Solid

• Aqueous

• Liquid

How many chloride ions are present when zinc chloride is split into ions?

• Two

• Four

• Six

• Eight

What is the charge on the zinc ion when zinc chloride is split into ions?

• 1+

• 2+

• 3+

• 4+

Which ions are considered spectator ions in this reaction?

• Phosphate ions

• Chloride ions

• Zinc ions

• Sodium ions

What is the net ionic equation derived from the reaction?

• 3Zn^2+ + 2PO4^3- → Zn3(PO4)2

• Zn^2+ + 2PO4^3- → Zn3(PO4)2

• Zn^2+ + PO4^3- → Zn3(PO4)2

• 3Zn^2+ + PO4^3- → Zn3(PO4)2

What is the net charge of the reactants in the net ionic equation?

• Zero

• Negative

• Positive

• Undefined

Why is it important to ensure the charge is balanced in the net ionic equation?

• To make the equation look neat

• To ensure the equation is correct

• To satisfy the solubility rules

• To balance the number of atoms

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

• Balancing the atoms

• Crossing out spectator ions

• Writing the states of compounds

• Ensuring charge balance