Hydrocarbon – Alcohols • Ethanol - 92.3% by weight of ethanol‚ 94.9% by volume. - 70 % which is used as local antiinfective • Diluted Alcohol - 48.4 % to 49.5% used as solvent • Brandy - distillation from wine • Whisky - fermented malted grain • Rum fermented molasses Product of Reductive Metabolism • Mannitol • Ash Manna • Fraxinus ornus – Oleaceae • Osmotic diuretic • Laxative Product of Reductive Metabolism • Sorbitol- Mountain ash • Sorbus aucuparia Rosaceae • Half as sweet as
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1. (a) Alkanes are saturated hydrocarbons.explain the words saturated and hydrocarbons. (b) Alkanes are generally unreactive. Explain why this is so. (c) write balanced equations for the complete combustion of: (i) methane (ii) ethane. 2. Use the passage below and your knowledge to answer the questions that follow. Methane reacts with bromine to give bromomethane and hydrogen bromide. The mechanism for the reaction is called free-radical substitution and involves
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QUALITATIVE TESTS FOR SOME CATIONS II CHEMISTRY 11.1 OCTOBER 5 2013 QUALITATIVE TESTS FOR SOME CATIONS II I. Introduction Qualitative analysis schemes are often based on selective precipitation of different cations. By carefully selecting reagents and conditions for reactions‚ groups of ions can be separated on the basis of their reactivity and the solubility of their salts. This enables the experimenter to use simple techniques with standard laboratory equipment‚ as well as to learn
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Qualitative Cation Tests Peter Jeschofnig‚ Ph.D. Version 42-0194-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing
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Analysis of Hydrocarbons Jessa Grace B. Castillo* and Stephanie Chua Department of Chemistry‚ University of Santo Tomas‚ Manila‚ Philippines ______________________________________________ Hydrocarbons are organic compounds containing only hydrogen and carbons and further divided in major types. Hydrocarbons react differently in reagents. The basis of determining an unknown hydrocarbon is due to the differences in reactions of hydrocarbons. An unknown compound is determined using tests. The unknown
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Analysis of Hydrocarbons Leoncito‚ Alyssa Lynn‚ Libatique‚ Keith Martin P.‚ Ligot‚ Nestlhyn B.*‚ Lim‚ Jamie Therese T. Department of Psychology‚ University of Santo Tomas‚ Manila‚ Philippines Abstract Four organic samples: hexane‚ cyclohexene‚ napthalene and toulene were given to serve as reference standards to characterize and distinguish four unknown given samples. Nitration‚ bromine and basic oxidation testswere conducted to classify the different samples from being an aliphatic‚ or aromatic
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REACTIONS OF HYDROCARBONS Vanessa P. Manibpel De La Salle University - Dasmariñas ABSTRACT Five substances namely Hexane‚ Eugenol‚ Unknown hydrocarbon 1‚ Unknown hydrocarbon 2‚ and Acetylene gas was used for the selective reactivity of hydrocarbons to functional group tests; Bayer’s test‚ Bromine test light‚ Bromine test dark‚ and Tollen’s test. In Bayer’s test‚ only Acetylene‚ Eugenol and Unknown hydrocarbon 2 reacted positively and the rest retain the purplish color of KMnO4. On the other hand
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Title : Properties of hydrocarbon Objective : 1) To study the properties of hydrocarbons. 2) To determine the unknown samples. Results : Part A : Combustion Compounds Observations Hexane There was orange flame and burned mildly during the burning process. No soots and smoke were produced. C6H14 + 19/2 O2 6CO2 + 7H2O Cyclohexene Orange flame burned vigorously. A small amount of black soot and smoke were produced during the burning process.
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Reducing sugar gives positive result in Benedict’s test as the colour of solution change from blue to brick-red and there is brick-red precipitate. Starch give positive result in Iodine test as the colour of solution change from yellow to dark blue. Glucose is the simplest carbohydrates that are monosaccharide or simple sugar. Starch consisting of a large number of glucose units joined together by glycosidic linkage and known as polysaccharide‚ that is polymers of sugar. Saliva that contains salivary
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Properties and Reactions of Hydrocarbons Abstract Introduction Hydrocarbons are organic materials that contain only carbon and hydrogen atoms‚ these molecules can be saturated or unsaturated and acyclic‚ cyclic‚ or aromatic. In this experiment we used a variety of methods to examine the physical and chemical properties of hydrocarbons. The first experiment we tested a variety of solvents to see if they dissolved our alkane (Decalin). One would expect that non-polar solvents will dissolve
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