Ch.4 - Chemical Quantities & Aqueous ReactionsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: A precipitation reaction.Which ions remain in solution after PbI2 precipitation is complete?

Problem

A series of photographs shows the overall reaction of the reactants 2 KI (aqueous) plus Pb(NO3) 2 (aqueous) going to the products 2 KNO3 (aqueous) plus PbI2 (solid). In the first photograph, K+ and I- ions in solution are added to a beaker containing Pb2+ and NO3- ions in solution. In the second photograph, Pb2+ (aqueous) and I- (aqueous) combine to form a yellow solid precipitate. In the third photograph, the solid precipitate has settled on the bottom of the beaker.  Because PbI2 is ionic, it forms a 3-dimensional structure.

A precipitation reaction.

Which ions remain in solution after PbI2 precipitation is complete?