quizlet how would you test the purity of aspirin
To put it simply there is a visible violet color reaction. Because violet is the color with the shortest wavelength (400-420 nm) it can easily be measured by a Visual Spectrophotometer. The intensity of the color is related to the purity and concentration of aspirin in a tablet. Using a series of different aspirin concentrations a spectrophotometer can measure each solution and a calibration curve can be constructed as a baseline for the amount of aspirin in a given aspirin product.