University Experiment
Reaction kinetics with spectrophotometry
Article No: P3070601
The organic dye crystal violet is decolorised in an alkaline medium. This reaction takes place according to a velocity-time law, hence it is a reaction of the first order. Using the integrated software, the change in concentration of the dye can be traced by measuring the extinction at the wavelength of the absorption maximum. The computer program plots the kinetic data in graphical form. Benefits Modern, easy-to-use photospectrometer Simple evaluation by integrated software Tasks The order of reaction during decolorisation of crystal violet is to be determined. Learning objectives Reaction kinetics First order reaction Photometry Reaction rate Necessary accessories Precision balance 620g/0.001g