Chemistry Labs

Topics: Significant figures, Titration, Chemistry Pages: 15 (4194 words) Published: September 12, 2013


(Written by Dr Geoffrey Neuss)


Page Introduction 1
Assessment of Practical Work 3
Error and uncertainty 7
Significant figures 8

1. Some common chemical reactions. 9
2. A traditional acid-alkali titration. 10 3. Analysis of aspirin tablets 11 4. Elements and compounds of period 3 12 5. Chlorine content of swimming pool water 13 6. Boiling points of liquid mixtures 14 7. Enthalpy changes 15

8. Redox titration with potassium permanganate(VII) 16 9. Group VII 17
10. Determination of the percentage of copper in brass 18 11. Electrolysis experiments 19
12. Electrochemical cells 20
13. Redox reactions of vanadium 21 14. Determination of Kc for an esterification reaction 22 15. Acid/base titrations using the pH meter 23 16. Factors affecting the rate of a chemical reaction 24 17. The kinetics of the iodination of propanone 25 18. Reactions of organic compounds 26 19. Preparation of cyclohexene from cyclohexanol 27 20. Preparation of 1,3-dinitrobenzene 28 21. Hydrolysis of halogenoalkanes 29 22. Alcohols and phenol 30 23. Preparation and purification of aspirin 31 24. Structure determination 32

© Dr. G.R.H. Neuss Atlantic College Chemistry Department - Practical Programme ATLANTIC COLLEGE HL CHEMISTRY (PRACTICAL)

Chemistry is an experimental science and practical work is a fundamental and important part of your two year Higher Level Chemistry course. Through the practical programme you will gain first-hand experience of many different chemical techniques and will observe for yourself much of what is covered in the theoretical part of the course. Hopefully, too, it will also make studying Chemistry much more challenging and relevant, and, of course, more enjoyable. Each practical in this book sets out clearly what it is aiming to achieve and many ask questions designed to make you think about the underlying principles and to ensure that you understand the chemistry involved. This book is not a complete list of all the practicals you will be doing. Sometimes you will simply be presented with a problem and it will be up to you to work out and plan how to solve it. As well as understanding the chemistry there are three other important aspects which concern all practical work - safety, the effect on the environment and the assessment of your work towards your final grade in the I.B.

The chemistry laboratory and the chemicals in it are potentially extremely hazardous and safe practice and a high level of awareness of potential risks must be maintained consistently at all times. You must ensure that you understand and follow the general college rules covering practical work in all our science laboratories which are displayed prominently in the laboratory. Chemistry poses particular problems of safety since in addition to scientific apparatus you will come into contact with many different chemicals, some of which pose a health risk. In each practical you will find that particular safety problems have been highlighted, however it is good practice to treat all chemicals with care. Use minimum quantities in well ventilated spaces, always replace stoppers on...
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