Core Practical 14: Finding the Activation Energy of a Reaction In this practical the activation energy for the reaction between bromide ions and bromate(V) ions will be determined BrO3-?+ 5B...
Core Practical 13a: Titrimetric Methods The reaction between iodine in an acidic solution and propanone is CH3COCH3?(aq) + I2?(aq) →?CH3COCH2I?(aq) + H+?(aq) +?I-?(aq) We can follow the rate...
Core Practical 10: Investigating Electrochemical Cells Measuring the EMF of a cell To measure a cell EMF you will need Two small beakers, around 75 cm3?capacity Strips of suitable metals suc...
Core Practical 9: Finding Ka for a Weak Acid The?Ka?of a weak acid may be determined by finding the pH at the half equivalence point At the half equivalence point?Ka?= [H+] Key steps in the ...
Types of Column Chromatography Column Chromatography In column chromatography, the column is often a long vertical glass tube or in the laboratory a burette is suitable An inert solid (usual...
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Thin Layer Chromatography Principles of Chromatography Chromatography is a technique that enables the separation of mixtures and includes: thin-layer chromatography (TLC) column chromatograp...
Proton NMR - Introduction Nuclear Magnetic Resonance (NMR)?spectroscopy is used for analysing organic compounds All samples are measured against a reference compound –?Tetramethylsilane (TMS) ?Tetr...
Using Carbon-13 Data Nuclear Magnetic Resonance (NMR) spectroscopy is used for analysing organic compounds Atoms with odd mass numbers usually show signals on NMR For example, isotopes of at...
