Preliminary Test and Solubility Classification of Organic...

Preliminary Test and Solubility Classification of Organic Compound Keene Louise Topacio, Christopher Jay Robidillo Abstract The experiment focuses on how to classify organic compounds by its functional groups. It is done by preliminary test and with the solubility test. Preliminary test used two known compounds also the unknowns. Physical state, color, odor, and ignition test were noted. The known compounds are inorganic and organic compounds. A comparison is made from the observation in the unknown sample, by which we had concluded that there were two organic compounds and one inorganic among the unknowns. In order to have a strong background about the solubility test, we first classify organic compounds of known functional group using†¦show more content†¦In order to have a more distinct result a systematic approach can be considered and it is by solubility classification. First is to test the solubility of the unknown in water. Several structural features of the unknown can be deduced if it is water-soluble. It must be of low molar mass and will usually contain no more than four to five carbon atoms, unless it is polyfunctional. Also, it must contain a polar group that will form a hydrogen bond with water, such as the hydroxy group of an alcohol or a carboxylic acid, the amino functionality of an amine, or the carbonyl group of aldehydes or ketones. Esters, amides, and nitriles dissolve to a lesser extent, and acid. chlorides or anhydrides react with water rather than simply dissolving in it. Test in ether for water soluble compounds are also observed this is to identify fur ther the functional groups in ther unknown. On the other hand, alkanes, alkenes, alkynes, and alkyl halides are water-insoluble. Supplementary test such as solubility in hydrochloric acid, then sodium hydroxide, sodium bicarbonate, and finally tested in sulfuric acid must be done accordingly. Solubility in one or more of these acids and bases is defined in terms of the compound being more soluble in base or acid than in water and reflects the presence of an acidic or basic functional group in the water-insoluble unknown compound. Methodology The experiment was divided into two parts and the groupShow MoreRelatedUniversity of Nairobi Bsc. Civil Engineering Degree Programme Details6511 Words   |  27 Pageswordprocessing, spreadsheets, database management, mathematical programming, statistics (tabulations and regression), project management. Software developments: knowledge-based systems (A.I.) FCE 181 - Chemistry IA (45 hrs) Inorganic Chemistry: Solubility, precipitation, ion-exchange, nitrification and denitrification, oxidation-reduction reactions, absorption, characteristics and significance of some salts and elements (ammonia, nitrates, phosphates, sulphates, silicates, chlorine, oxygen, ozoneRead MoreNatural Dyes11205 Words   |  45 PagesNatural dyes are dyes or colorants derived from plants, invertebrates,a or minerals. The majority of natural dyes are vegetable dyes from plant sources – roots, berries, bark, leaves, and wood — and other organic sources such as fungi and lichens. Archaeologists have found evidence of textile dyeing dating back to the Neolithic period. In China, dyeing with plants, barks and insects has been traced back more than 5,000 years.[1] The essential process of dyeing changed little over time. TypicallyRead MoreClassification Of Poisons And Its Effects On The Nervous System10120 Words   |  41 Pages AMITY INSTITUTE OF FORENSIC SCIENCES AMITY UNIVERSITY UTTAR PRADESH Name: - Sanchari Dasgupta Enrolment No.: - A5905914014 Programme: - B.Sc (Hons) Forensic science Batch: - 2014-17 Title of summer assignment: - Classification of poisons Goal for the first week: - Introduction of the topic Goal for the second week: - Write in brief about corrosive poisons and non-metallic irritant poison Goal for the third week: - Write in brief about metallic irritant poisons Goal for the fourth week: