Concentration Calculations Step by step Concentration calculations involve bringing together the skills and knowledge you have acquired previously and applying them to problem solving You should be...
Concentrations of Solutions Standard solutions Chemists routinely prepare solutions needed for analysis, whose concentrations are known precisely These solutions are termed standard solutions They ...
Real Gas Behaviour The ideal gas equation does not fit all measurements and observations taken at all conditions with real gases The relationship between pressure, volume and temperature shows sign...
Gas Law Relationships Gases in a container exert a pressure as the gas molecules are constantly colliding with the walls of the container Gas particles exert a pressure by constantly colliding with...
Ideal Gas Equation Kinetic theory of gases The kinetic theory of gases states that molecules in gases are constantly moving The theory makes the following assumptions: The gas molecules are moving ...
Avogadro's Law Volumes of gases In 1811 the Italian scientist Amedeo Avogadro developed a theory about the volume of gases Avogadro’s law (also called Avogadro’s hypothesis) enables the mole ratio ...
Reaction Yields Percentage yield In a lot of reactions, not all reactants react to form products which can be due to several factors: Other reactions take place simultaneously The reaction does not...
Reacting Masses & Limiting Reactants The number of moles of a substance can be found by using the following equation: It is important to be clear about the type of particle you are referring to...
Empirical & Molecular Formulae The molecular formula is the formula that shows the number and type of each atom in a molecule E.g. the molecular formula of ethanoic acid is C2H4O2 The empirical...
