Net Ionic Equations and Spectator Ions

The video tutorial explains how to write a balanced net ionic equation for the reaction between sodium hydroxide and manganese(II) nitrate. It begins with balancing the molecular equation, then discusses the solubility and states of the reactants and products. The tutorial proceeds to split strong electrolytes into ions for the complete ionic equation and identifies spectator ions to derive the net ionic equation. The video concludes by ensuring the charges and atoms are balanced in the final equation.

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

• Write the complete ionic equation

• Balance the molecular equation

• Determine the states of substances

• Identify spectator ions

Why do we put a coefficient of 2 in front of sodium nitrate in the molecular equation?

• To balance the hydroxide ions

• To balance the sodium ions

• To balance the manganese ions

• To balance the nitrate ions

Which of the following is considered a strong electrolyte?

• Sodium hydroxide

• Manganese(II) nitrate

• Sodium chloride

• Manganese(II) hydroxide

What is the state of manganese(II) hydroxide in the reaction?

• Liquid

• Aqueous

• Gas

• Solid

What is the charge of sodium ions in the complete ionic equation?

• 1+

• 2-

• 1-

• 2+

Which ions are considered spectator ions in this reaction?

• Hydroxide and manganese ions

• Sodium and hydroxide ions

• Manganese and nitrate ions

• Sodium and nitrate ions

What is the purpose of removing spectator ions in the net ionic equation?

• To determine the states of substances

• To identify the precipitate

• To balance the charges

• To simplify the equation

How do we ensure the net ionic equation is balanced?

• By adding more reactants

• By removing all ions

• By changing the states of substances

• By balancing the charges and atoms

What is the charge balance in the net ionic equation?

• Two positive and two negative charges

• No charges

• One positive and one negative charge

• Three positive and three negative charges

Why might the positive ion be written first in the net ionic equation?

• It is a convention for clarity

• It changes the reaction outcome

• It balances the equation

• It is required by the periodic table