Balancing Reactions with Nitric Acid

The video tutorial explains how to write a balanced net ionic equation for the reaction between nitric acid (HNO3) and magnesium metal (Mg). It begins by balancing the molecular equation, then assigns states to each substance. The tutorial proceeds to split strong electrolytes into ions to form the complete ionic equation, and then identifies and removes spectator ions to derive the net ionic equation. The video concludes by ensuring that both charge and atoms are balanced in the final equation.

What is the first step in balancing the molecular equation for the reaction between HNO3 and Mg?

• Balance the number of nitrates.

• Determine the states of the substances.

• Identify the spectator ions.

• Split the strong electrolytes into ions.

Why is nitric acid considered aqueous in the reaction?

• Because it is a weak acid.

• Because it is a solid.

• Because it is a strong acid.

• Because it is a gas.

What is the state of magnesium metal in the reaction?

• Liquid

• Aqueous

• Gas

• Solid

What is the purpose of splitting strong electrolytes into ions?

• To determine the spectator ions.

• To balance the molecular equation.

• To form the complete ionic equation.

• To identify the states of substances.

Which of the following is not split into ions in the complete ionic equation?

• Nitrate ions

• Magnesium ions

• Hydrogen gas

• Nitric acid

What are spectator ions?

• Ions that participate in the reaction.

• Ions that are only in the reactants.

• Ions that are only in the products.

• Ions that appear unchanged on both sides of the equation.

How do you derive the net ionic equation from the complete ionic equation?

• By adding more ions.

• By removing spectator ions.

• By changing the states of substances.

• By balancing the charges.

What ensures that the net ionic equation is balanced?

• The presence of spectator ions.

• The number of molecules.

• The states of substances.

• The balance of charges and atoms.

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

• One plus

• Two plus

• Three plus

• Zero

What is the final product of the reaction between dilute nitric acid and magnesium metal?

• Magnesium sulfate

• Magnesium chloride

• Magnesium nitrate and hydrogen gas

• Magnesium oxide