IB Chemistry Topic 5 & 15 Videos

This video introduces the fundamentals of chemical reactions, including reactants, products, state symbols, and molar ratios. It also covers limiting and excess reagents and teaches the step-by-step method for balancing chemical equations, with practice examples.

This video explains how to calculate theoretical yield, experimental yield, and percentage yield, along with common causes of loss. It also introduces atom economy as a measure of reaction efficiency and waste, with worked examples and exam-style questions.

This video introduces the concept of reaction rate and how it is measured. It explains collision theory and activation energy, showing how temperature influences the rate of reaction using graphical tools like Maxwell-Boltzmann distributions.

This video discusses how catalysts work by lowering activation energy, and reviews the six main factors that affect reaction rate: temperature, concentration, surface area, pressure, catalysts, and light.

This video covers how the rate-determining step determines overall reaction rate, how to construct the rate expression, and how to calculate reaction order from experimental data.

This video explores reaction mechanisms and molecularity, and introduces the Arrhenius equation for calculating activation energy and how temperature affects the rate constant.

This video explains dynamic equilibrium, how it is established, and how changes in temperature, pressure, and concentration affect it, using Le Chatelier’s Principle.

This video introduces the equilibrium constant (Kc), how it is expressed and interpreted, and how changes in temperature affect its value.

This video guides students through calculations involving the equilibrium constant, using ICE tables to determine either the value of Kc or unknown concentrations at equilibrium.

This video introduces the reaction quotient (Q) and shows how it relates to Kc. It also explains how Gibbs free energy (ΔG) can indicate spontaneity and position of equilibrium using thermodynamic equations.