Experimental - Testing the purity of an organic compound

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Testing the purity of an organic compound

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A2 Inorganic Chemistry experiments

Task	Possible context
Carry out a redox titration	The analysis of iron tablets by titration using acidified potassium manganate(VII)
Investigate the chemistry of transition metal compounds in a series of experiments	The chemistry of copper compounds
Prepare an inorganic complex	The preparation of hexaamminecobalt(III) chloride or the preparation of iron(II) ethandioate

A2 Physical Chemistry experiments

Task	Possible context
Carry out a kinetic study to determine the order of a reaction	An iodine clock experiment e.g. the reaction of sulfite ions with iodate(V) ions
Determine an equilibrium constant	Determine a value of Kc for the reaction of ethanol with ethanoic acid.
Investigate how pH changes when a weak acid reacts with a strong base or when a strong acid reacts with a weak base.	Determine the pH curve for ethanoic acid reacting with sodium hydroxide

A2 Organic Chemistry experiments

Task	Possible context
Prepare a solid organic compound	The preparation of aspirin
Purify an organic solid	The recrystallisation of impure benzenecarboxylic acid from hot water
Test the purity of an organic solid	Determine the melting point of benzenecarboxylic acid