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Ratios are an alternative way of expressing fractions. This leaflet revises ratio calculations.

Launch Ratios - Revision

Video tutorials exercises and diagnostic tests on the transposition of formulae (rearranging equations).

Launch Transposition of Formulae

The van 't Hoff equation in thermodynamics relates the change in temperature to the change in the equilibrium constant. This guide looks at the derivation and application of the formula.

Launch Van't Hoff Equation

Simultaneous Equations in Chemistry

This interactive presentation shows how simultaneous equations can be used in a variety of chemistry applications. Along with context-based examples there is an overview of how to solve linear simultaneous equations and a quiz at the end for you to check your understanding

An overview of logs and their uses calculations in chemistry involving logs and the process of linearisation using logs with applications to kinetics and some thermodynamic expressions

Launch Logarithms in Chemistry