CHEMICAL AND SPECTROSCOPIC IDENTIFICATION OF UNKNOWN ORGANIC COMPOUNDS Background In this lab you will be given a series of unknown compounds, either in pure form or as a mixture of two compounds. Your task is to separate the components (if necessary) and, using an assortment of instrumental and wet chemical methods, unambiguously establish Observe whether a sooty yellow flame results. Compounds giving the sooty yellow flame have a high degree of unsaturation and are likely aromatic. If not soot is observed, you likely do not have an aromatic compound. Test Compounds: ethyl benzoate, cyclohexanol and your unknown . C. Bromine in Methylene Chloride Allows compound-specific δ 34 S measurement of organic compounds – only the third such setup worldwide. After organosulfur compounds are separated by GC, ICP applies a hot plasma to degrade organic compounds into their constituent atoms, including S. Stable isotopic measurements are made directly on atomic S ions ( 32 S + and 34 S + ). Description: Organic chemistry of aliphatic and aromatic compounds with emphasis on structure, functional groups, bonding, stereochemistry, and reaction mechanisms. CHEM 211 may be taken as a prerequisite for higher study in chemistry. preliminary identification) of organic compounds is melting point determination. The melting point of a substance is the temperature at which the solid phase is in equilibrium with the liquid phase. In other words, both phases can exist at the melting point. For water, this corresponds to 0oC. Similarly, organic compounds have melting points. For Feb 22, 2015 · Org lab recrystallization lab report final 1. Recrystallization and Identification of an Unknown Kaitlyn Greiner Organic Chemistry 2270 Laboratory, Section 027 Instructor: Maria Swasy October 9, 2014 “My signature indicates that this document represents my own work.