James Matthew Jocson*, Gianvittorio Lanta, Chiqui Ann Llamado, Jeron Manaig
College of Science Department of Biology University of Santo Tomas, Manila, Philippines
Abstract Five oxygen-bearing organic compounds were given namely Methanol, 2-propanol, tert - butanol, formalin, and acetone. Different tests were done to each sample to differentiate their characteristics. These test were Dichromate test, Tollens Test, DNPH test, Iodoform Test, and Lucas Test. This was conducted to classify the samples from being a primary alcohol, a secondary alcohol, a tertiary alcohol, aldehyde, or a ketone.
Introduction
In analyzing the oxygen bearing organic compounds, there are several tests that may be performed to distinguish among the different classes of alcohols, aldehydes, and ketones. All these tests exploit differences in the type and degree of reactivity of each of the functional groups. Several different oxidizing agents may be used to cause theoxidation of molecules. Potassium permanganate (KMnO4) or potassium dichromate (K2Cr2O7) or even atmospheric oxygen (O2) are oxidizing agents. An aldehyde is an organic compound containing a formyl group. This functional group, with the structure R-CHO, consists of a carbonyl center (a carbon double bonded to oxygen) bonded to hydrogen and an R group, which is any generic alkyl or side chain. The group without R is called the aldehyde group or formyl group. Aldehydes differ from ketones in that the carbonyl is placed at the end of a carbon skeleton rather than between two carbon atoms. Aldehydes are common in organic chemistry. Many fragrances are aldehydes.
A ketone is an organic compound with the structure RC(=O)R', where R and R' can be a variety of carbon-containing substituents. It features a carbonyl group (C=O) bonded to two other carbon atoms.
Methanol is a chemical with the formula CH3OH (often abbreviated MeOH). It is the simplest alcohol, and is a light, volatile,