Complete Ionic Equations and Spectator Ions

This video tutorial guides viewers through writing the balanced net ionic equation for the reaction between hydrobromic acid (HBr) and iron(II) sulfide (FeS). It begins with balancing the molecular equation, followed by determining the states of each substance involved. The tutorial then explains how to write the complete and net ionic equations, highlighting the role of spectator ions. Finally, it ensures that both atoms and charges are balanced in the net ionic equation, with a brief discussion on the state of H2S as either aqueous or gas.

What is the main goal of the video tutorial?

• To demonstrate the preparation of HBr in the lab

• To discuss the solubility of iron compounds

• To write the balanced net ionic equation for HBr and FeS

• To explain the properties of hydrobromic acid

What is the first step in balancing the molecular equation?

• Identifying spectator ions

• Determining the states of the reactants

• Writing the complete ionic equation

• Adjusting the coefficients to balance hydrogen atoms

Why is HBr considered aqueous in the reaction?

• Because it is a weak acid

• Because it is a strong acid and dissociates in water

• Because it forms a solid precipitate

• Because it is a gas at room temperature

What is the state of FeS in the reaction?

• Liquid

• Solid

• Gas

• Aqueous

Which type of compounds are split into ions in the complete ionic equation?

• Gases

• Strong electrolytes

• Solids

• Weak acids

What happens to weak acids in the complete ionic equation?

• They are split into ions

• They remain intact

• They form a solid

• They are converted to gases

What is the charge of the iron ion in the complete ionic equation?

• 1+

• 0

• 3+

• 2+

What is the role of spectator ions in the reaction?

• They participate in the reaction

• They are unchanged and appear on both sides of the equation

• They form a precipitate

• They are gases released during the reaction

What is the significance of the state of H2S in the net ionic equation?

• It changes the charge balance

• It does not significantly change the equation

• It affects the solubility of the reaction

• It determines whether H2S is split into ions

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

• Writing the complete ionic equation

• Determining the states of substances

• Identifying and removing spectator ions

• Balancing the molecular equation