CHM120H5 Lecture Notes - Lecture 1: Volumetric Flask, Burette, Titration
Document Summary
The reacion, which was studied in this experiment, was the oxidaion of alcohols by chromium (vi), whose progress can be viewed visually or spectrophotometrically as the colour of the soluion changes from orange (hcro4. This property of abrupt colour change in the chromium (vi) soluion on reacion with ethanol is popularly used in breathalyzers throughout canada. The purpose of this experiment was to follow the rate of reacion itrametrically and to determine the order of the reacion with respect to hcro4. Making and analyzing the appropriate rate plots allowed the determinaion of the order of the reacion. Firstly, 5. 00ml of 0. 2750 m k2cr2o7 was obtained using a digital pipet and expelled into a 250 ml volumetric lask and then 3. 6 m hcl was added to the lask as well. Soluion was measured out from the 250 ml lask and put into a 50ml graduated cylinder and the remaining. Soluion was set aside for later use.
