Ionic Reactions and Spectator Ions

The video tutorial explains how to balance the net ionic equation for the reaction between potassium sulfide and lead(II) nitrate. It starts by balancing the molecular equation, determining the states of each substance, and then forming the complete ionic equation. The tutorial proceeds to derive the net ionic equation by removing spectator ions and concludes by emphasizing the conservation of charge and mass.

What is the first step in balancing the molecular equation for potassium sulfide and lead(II) nitrate?

• Balance the sulfide ions.

• Balance the lead ions.

• Balance the nitrate ions.

• Balance the potassium ions.

Why are potassium compounds generally considered soluble?

• They are always in solid form.

• They form strong covalent bonds.

• They are transition metals.

• They are in Group 1 of the periodic table.

What is the state of lead(II) sulfide in the reaction?

• Aqueous

• Gas

• Liquid

• Solid

Which ions are split into their individual components in the complete ionic equation?

• Only the transition metals

• All strong electrolytes

• Only the solid compounds

• All compounds

What is the charge of the lead ion in lead(II) nitrate?

• 4+

• 3+

• 1+

• 2+

What is the purpose of identifying spectator ions in the ionic equation?

• To balance the equation

• To determine solubility

• To simplify the equation

• To identify the precipitate

Which ions are considered spectator ions in this reaction?

• Only nitrate ions

• Lead and sulfide ions

• Potassium and nitrate ions

• Only potassium ions

What is conserved in the net ionic equation?

• Neither mass nor charge

• Both mass and charge

• Only charge

• Only mass

Why might some people prefer to write the positive ion first in the net ionic equation?

• It changes the solubility of the compound.

• It helps in balancing the equation.

• It is a strict rule in chemistry.

• It is a matter of personal preference.

What is the final product of the reaction between potassium sulfide and lead(II) nitrate?

• Potassium sulfide

• Lead(II) nitrate

• Lead(II) sulfide

• Potassium nitrate