Balancing Chemical Equations with Nitrates

The video tutorial explains how to balance the chemical equation for calcium reacting with iron(III) nitrate. It describes the reaction as a single displacement reaction where calcium displaces iron. The tutorial uses a strategy of treating the nitrate ion as a single unit to simplify the balancing process. By adjusting coefficients, the video demonstrates achieving a balanced equation, ensuring equal numbers of each type of atom on both sides of the equation.

What type of reaction is occurring between calcium and iron(III) nitrate?

• Double displacement

• Single displacement

• Synthesis

• Decomposition

What is the role of calcium in the reaction?

• It remains unchanged

• It displaces iron from the compound

• It is a spectator ion

• It forms a new compound with iron

Why is the nitrate ion treated as a single unit in the balancing process?

• It is easier to count individually

• It changes form during the reaction

• It is present in both reactants and products

• It is a complex ion

How many nitrate ions are present on the reactant side before balancing?

• Four

• Three

• Two

• One

What coefficient is used for iron to balance the equation?

• One

• Two

• Three

• Four

What is the final coefficient for calcium in the balanced equation?

• Three

• Two

• Four

• One

What is the purpose of multiplying the number of nitrates by two during balancing?

• To balance the calcium

• To make the equation more complex

• To ensure an even number of nitrates

• To simplify the calculation

What is the balanced chemical equation for the reaction?

• Ca + 2Fe(NO3)3 → 2Ca(NO3)2 + Fe

• Ca + Fe(NO3)3 → Ca(NO3)2 + Fe

• 2Ca + 3Fe(NO3)3 → 2Ca(NO3)2 + 3Fe

• 3Ca + 2Fe(NO3)3 → 3Ca(NO3)2 + 2Fe

What is a key strategy mentioned for balancing equations with polyatomic ions?

• Count each atom separately

• Treat the polyatomic ion as a single unit

• Balance the equation without considering ions

• Ignore the polyatomic ions

What is the final step in ensuring the equation is balanced?

• Check the coefficients

• Recalculate the number of atoms

• Adjust the coefficients for calcium and iron

• Verify the balance of nitrates