Special studies
You can find updated texts and experiments, study guides, web-links, and sample exam questions for Biochemistry, Materials Science, Chemical Engineering and Food Science. The new versions are easier to study while still covering everything needed for the Edexcel/Nuffield course. For Mineral Process Chemistry see the React tutorials and instructions about where to get the books.
In the Special Studies the experiments are not an optional extra but an integral part of the course.
Although the Edexcel Chemistry (Nuffield) specification does not expect you to be able to recall all the details of how to carry out the experiments, an exam question could describe the experiment to you, and then ask for an understanding of why it was conducted in the manner described or to give an outline of the results expected. The best way to prepare for this is to do the experiments!
Recently Asked Questions
- I'm doing an investigation into the total acidity of wine, but I’m confused because I've got the amounts of NaOH needed to titrate the acid (I’m using tartaric acid to represent all the acids in wine) and from this I can calculate the number of moles of acid used. However is the number the titratable acidity or are there further calculations needed? Some sites say the TA is proportional to the cc used e.g. 1 cc = 0.1% TA, is this correct? Also I am planning on doing a steam distillation to find the volatile acids. However I cannot find anything that tells me the end point for this experiment? After I have titrated the distillate against NaOH I am unsure on which calculations to do. Do I find the concentration of acids again, but surely everything that was distilled off is acidic? 180309
- During my investigation in titrating ascorbic acid with DCPIP, I have been told that DCPIP needs to be freshly prepared each day. Why does the DCPIP go off? What happens to the structure of DCPIP, what affects the rate of the DCPIP going off, and how does this affect the overall titration? 090109
- I am currently investigating the vitamin C content of fruit juices and vitamin C supplements. I have used a colorimeter and have carried out the investigation. I am just having some problems with the calculations of how to get from a reading the concentration of iodine off of the calibration curve, to how much ascorbic acid is present. Please could you give me some help? 191108
updated: 18 December 2007
