Lesson Walkthrough Archives - Page 14 of 23

IB DP Chemistry R2.3 L5 | Le Châtelier’s Principle | Lesson Walkthrough

Predict equilibrium shifts caused by concentration, pressure and temperature changes and distinguish these from changes in K.

Use and test small-K approximations, then solve mixed equilibrium-composition problems.

Connect the equilibrium constant with standard Gibbs energy and use the relationship to predict reaction position.

Calculate the reaction quotient and compare Q with K to predict the direction of net reaction.

Construct ICE tables and solve for equilibrium composition using exact algebraic methods.

Measure reaction rates using mass loss and gas volume, compare units and convert measurements to molar rates.

Calculate mean and instantaneous rates from graphs using gradients and tangents.

Explain successful collisions through energy and orientation, and use particle models to compare rates.

Compare catalysts and explain alternative reaction pathways with lower activation energies.

Use Maxwell–Boltzmann curves to explain catalysis and challenge common misconceptions.