Solutions and solubility
What students will learn
Explain what is dissolved, how particle counts represent concentration, and how interactions and later equilibrium conditions determine solubility.
Before this topic
- Moles, solution concentration and dilution
- Molecular polarity and interparticle interactions
Find a resource or check in this book →
Unit 3: Properties of Substances and MixturesUnit 7: Equilibrium
Read and connect
Supporting reading: Composition of Mixtures →
Revisit mixture composition and the assumptions behind a purity or mass-balance claim.
Supporting reading: Solutions and Mixtures →
Revisit analytical concentration, ion concentrations, final volume and amount-preserving dilution.
Read: Representations of Solutions →
Construct charge-balanced solution windows with a stated icon scale, represented volume and hydration orientation.
Read: Solubility →
Explain relative solubility through interactions lost and formed, while separating heat release from favorability.
Supporting reading: Separation of Solutions and Mixtures →
Connect mixture structure to a separation method; the full measurement pathway follows in the next chapter.
Supporting reading: Introduction to Solubility Equilibria →
Later connection: distinguish molar solubility, free-ion concentration and precipitation after mixing.
Before this connection: Chemical equilibrium: dissolution equations, Q versus K, and molar solubility.
Supporting reading: Common-Ion Effect →
Later connection: include the initial common-ion source before approximating the dissolution change.
Before this connection: Chemical equilibrium: dissolution equations, Q versus K, and molar solubility.
Supporting reading: pH and Solubility →
Later connection: link proton transfer to free ions and saturated total solubility.
Before this connection: Chemical equilibrium: dissolution equations, Q versus K, and molar solubility; Acids, bases, and pH: conjugate pairs and proton-transfer equilibria.
Supporting reading: Free Energy of Dissolution →
Later connection: combine lattice, solvent and hydration contributions to dissolution free energy.
Before this connection: Chemical equilibrium: dissolution equations, Q versus K, and molar solubility; Energy transfer and enthalpy; Entropy and standard free energy.
Supporting reading: Solvation →
Alternative original solvation reading with accepted viewing revisions; extended solubility-rule memorization is not added to the main path.
Before this connection: Chemical equilibrium: dissolution equations, Q versus K, and molar solubility.
Check understanding
Use the complete prompt to make student reasoning visible, then consult the separate worked reasoning and criteria. A reading completion tick records reading history.
Construct and compare two solution particle windows →
Create both labeled ion-and-water sketches, distinguish covalent bonds from hydration contacts, and compare count per represented volume.
Construction includes the volume and icon-amount legend; more icons alone do not establish greater concentration.
Explain a dilution and preparation error →
Conserve solute amount, calculate the final concentration and trace an overfilled flask to a low concentration.
Predict precipitation from the mixed solution →
After the equilibrium chapter, use post-mixing concentrations for Qsp, explain the stock-concentration error and interpret a separate saturated measurement.
Use after Q/K and dissolution stoichiometry. The stated dilute single-solid model supplies the required solubility assumptions.
Standards and earlier reading lists
These topic placements organize reading. Edition-qualified Standards mappings and the existing complete unit task sets retain their reviewed scope.