CCEA AS/A2 Chemistry Student Guide: Practical Chemistry
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Language
English
ISBN
9781510446991
Cover
Title Page
Copyright
Contents
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About this book
Content Guidance
AS practical chemistry
1 Determining the formula of a hydrated compound by weighing and heating a hydrated salt to constant mass
2 Use the deflection of a stream of liquid from a burette to indicate polarity or lack of polarity within a molecule
3 Carry out tests of electrical conductivity on solids, liquids and aqueous solutions of ionic and covalent substances
4 Determine the solubility of chlorine and iodine in aqueous and non-aqueous solvents
5 Produce a reactivity order of the halogens using the displacement reactions of the halogens with other halide ions in solution
6 Carry out the reactions of the halides with concentrated sulfuric and phosphoric acids and perform chemical tests for the products (excluding hydrogen sulfide)
7 Carry out an acid–base titration to determine the concentration of acid/base, the degree of hydration in a hydrated metal carbonate and the percentage of ethanoic acid in vinegar
8 Prepare solutions of known concentrations
9 Use chemical tests listed in ‘Qualitative tests’ to identify unknown substances
10 Test for unsaturation using bromine water
11 Preparation of a halogenoalkanes using the techniques of refluxing. separating with a funnel, removing acidic impurities, drying and distillation
12 Prepare alcohols from halogenoalkanes using alkali
13 Investigate the relative rates of hydrolysis of halogenoalkanes
14 Carry out elimination of hydrogen halides from halogenoalkanes using ethanolic potassium hydroxide
15 Carry out test tube reactions of alcohols with sodium, hydrogen bromide/hydrobromic acid and phosphorus pentachloride
16 Prepare aldehydes, carboxylic acids and ketones from alcohols using acidified potassium dichromate(VI)
17 Determine the enthalpy changes for combustion and neutralisation using simple apparatus
18 React Group II metals and other metals with oxygen, water and dilute acids and determine the masses of solids and volumes of gases produced
A2 practical chemistry
1 Carry out experiments to determine the rate of a reaction using a variety of methods to determine the concentration of reactants and/or products
2 Make buffer solutions from calculated quantities of salts and acids and determine their pH values using universal indicator (UI) paper and a pH meter
3 Determine the shape of a titration curve by measuring the pH using specialised pH paper or a pH meter for the titration of an acid with a base
4 Determine the pH of a variety of salts using pH paper or a pH meter to illustrate the relative strength of acid and base
5 Prepare, recrystallise and determine the melting point of 2,4-dinitrophenylhydrazones
6 Use Fehling’s solution and Tollens’ reagent to distinguish between aldehydes and ketones
7 Prepare a carboxylic acid from an alcohol
8 Carry out test tube reactions of a carboxylic acid with sodium carbonate, sodium hydroxide and aqueous ammonia and measure the pH changes
9 Prepare a liquid ester from a carboxylic acid and an alcohol
10 Preparation of methyl 3-nitrobenzoate
11 Titrate iodine with sodium thiosulfate using starch and hence estimate oxidising agents by their reaction with excess acidified potassium iodide
12 Titrate acidified potassium manganate(VII) with reducing agents
13 Determine the purity of a Group II metal oxide or carbonate by back titration
14 Carry out paper and thin-layer chromatography and measure the Rf values of the components and interpret chromatograms
15 Use ethylene diamine (1,2-diaminoethane), phenylamine and aqueous ammonia to demonstrate ligand replacement based on lone pair availability
16 Demonstrate the relative strengths of ligands using hydrated copper(II) ions and hydrochloric acid
17 Carry out qualitative detection tests for the formation of transition metal hydroxides with sodium hydroxide solution and aqueous ammonia
18 Carry out the reduction of acidified ammonium metavanadate with zinc and observe the sequence of colours
19 Determine the electrode potentials of a series of cells and predict their values using standard electrode potentials
20 Determine the amount of a carbonate, for example calcium carbonate or magnesium carbonate, in an indigestion tablet
21 Prepare aspirin using salicylic acid and ethanoic anhydride
22 Use chromatography to compare the purity of a laboratory-made aspirin with commercial tablets
Organic identification tests
Questions & Answers
AS practical assessment questions
A2 practical assessment questions
Knowledge check answers
Glossary
Index
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