Activities
Voltaic cells
This practical gives you hands-on experience of constructing voltaic cells and identifying the direction of electron flow in the external circuit and the need for a salt bridge to allow ions to flow between...
Activities
Chlorine in swimming pools
This practical uses the redox reaction between chlorine and iodide ions to releases iodine which is then reacted with thiosulfate ions. It is a simple experiment for you to carry out as the volumes are...
Activities
CaCO3 in egg shells
This practical uses the technique of 'back titration' to determine the percentage of calcium carbonate present in the shells of eggs. In this technique a known excess of acid is added to react with all...
Activities
Determining the pKa of a weak acid
This Higher Level practical gives you practice at determining the pKa of a weak acid by two different methods. This practical involves a strong acid - strong alkali titration using a pH probe to determine...
Activities
Titrations with a pH meter
This practical gives you experience of using a pH meter to cover permutations of strong and weak acid titrations with strong and weak bases. It also lends itself well to using a data logger to record...
Activities
Acid-alkali titration
This practical is a relatively straightforward acid-base titration problem to determine the amount of water of crystallisation in crystals of ethane-1,2-dioic acid (commonly known as oxalic acid) which...
Activities
Determining Kc for an esterification reaction
This practical uses the method of titration for you to determine the value of the equilibrium constant for the esterification reaction between ethanol and ethanoic acid. Although details of the reaction...
Activities
Le Chatelier's principle
This practical illustrates the principles of dynamic equilibrium using colour changes and also introduces you to microscale chemistry by using only one or two drops of each chemical solution. Using a...
eBook
S3.2(AHL) Identification from spectra (3)
only: This question provides elemental analysis, mass spectrometry, infrared spectroscopy and 1H NMR data for you to identify the name, molecular formula and structural formula of the compound. It also...
eBook
S3.2(AHL) Identification from spectra (2)
only: This question provides elemental analysis, mass spectrometry, infrared spectroscopy and 1H NMR data for you to identify the name, molecular formula and structural formula of the compound. It also...