Equilibrium
Dynamic and quantitative equilibrium reasoning across Le Chatelier shifts, K expressions, and composition calculations.
This route helps when you keep missing the same type of question across different topics. Use it to combine lesson notes with linked practice and tools in one place.
Notes and Hubs in This Route
- Manufacturing Ammonia (Haber Process)
Haber process: feedstocks, reversible equation, ammonia separation, gas recycling and interpretation of supplied industrial data.
- Reversible Reactions
Reversible reactions for K324 / 6092: forward and backward reactions, the Haber equation, and interpreting industrial temperature, pressure and catalyst data.
- Chemistry of Aqueous Solutions (A Level)
A Level aqueous equilibria notes: pH and Ka/Kb/Kw calculations, buffers and titration curves, Ksp and precipitation, plus common ion effect and complex ions.
- Buffer Solutions (A Level)
Understand buffer action and calculate pH changes using Ka/pKa and concentration ratios, including approximation checks and common exam traps.
- Catalysis and Enzymes (A Level)
Compare homogeneous vs heterogeneous catalysis, explain how catalysts lower Ea, and describe enzymes as specific catalysts with temperature/pH effects.
- Chemical Equilibria (A Level)
A Level chemical equilibria notes: dynamic equilibrium and Le Chatelier, Kc/Kp expressions, ICE-table calculations, equilibrium composition, and Haber process.
- Common Ion Effect and Complex Ions (A Level)
Predict solubility changes using the common ion effect, and explain how complex-ion formation increases solubility in linked equilibria.
- Dynamic Equilibrium and Le Chatelier (A Level)
Define dynamic equilibrium precisely and use Le Chatelier’s principle to predict shifts when concentration, pressure, and temperature change.
- Entropy and Gibbs Free Energy (A Level)
Predict entropy change and use ΔG° = ΔH° − TΔS° to decide feasibility, with careful signs, units, and data-booklet cues.
- Equilibrium Composition Calculations (A Level)
Solve Kc/Kp equilibrium composition questions with ICE tables, justified approximations, and quick sanity checks that prevent errors.
- Equilibrium Constants (Kc and Kp) (A Level)
Write correct Kc and Kp expressions, interpret what magnitude means, and avoid the common expression, units and pressure traps.
- Haber Process (Case Study) (A Level)
Use the Haber process to combine equilibrium + kinetics + economics: conditions, trade-offs, and the exact reasoning examiners want.
- Ka, Kb, Kw, pKa, pKb (A Level)
Define Ka, Kb, Kw, pKa and pKb, and use key relationships to move between constants, pH and equilibrium reasoning with exam-safe meanings.
- Ksp and Solubility Calculations (A Level)
Write Ksp expressions, calculate molar solubility, and predict precipitation using Qsp vs Ksp, with a repeatable exam workflow.
- pH Calculations (Strong and Weak) (A Level)
Calculate pH for strong and weak acids/bases using Ka/Kb, with clear approximations, ICE tables when needed, and final-answer checks.