This experiment focuses on determining if an unknown chemical is an aldehyde or a ketone. This determination is made based on the results of a Tollens Test‚ a Schiff test‚ an iodoform test and a derivative melting point analysis. An aldehyde is a Carbonyl group that is attached to a carbon atom and a hydrogen atom (5). Aldehydes are useful as perfumes‚ flavoring agents‚ dyes and in plastic development (5). One of the most important industrial aldehydes is formaldehyde (5). A Ketone
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Mary Eunice Agapito‚ Denmarc R. Aranas*‚ Limuel Joseph V. Bacani‚ and Steven Arthur Baluyot Analysis of Hydrocarbons Department of Biology‚ University of Santo Tomas‚ Manila‚ Philippines Abstract In this experiment we performed parallel chemical test method to identify an unknown. The reflux setup was used to prevent evaporation in mixing the reactants in an inert solvent with its boiling point. Another highlight of this experiment is the liquid-liquid extraction wherein a solution containing
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The natural plant exudate gum tragacanth is obtained from the stem of the bush like plant “goat’s-horn”‚ Astragalus species. Gum tragacanth has been used commercially for well over 2000 years and is currently widely used as a thickener and emulsifier in emulsion systems in different pharmaceutical‚ food‚ cosmetic and diverse industrial uses. In addition‚ it is on the list of stabilizers that are permitted by Food and Agriculture Organization/ World Health Organization that could be used during the
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* Question 1 0 out of 1 points | | | Which bond or interaction would be difficult to disrupt when compounds are put into water?Answer | | | | | Selected Answer: | A. hydrogen bond | Correct Answer: | C. covalent bond | | | | | * Question 2 1 out of 1 points | | | What is the atomic number of the cation formed in the reaction illustrated above?Answer | | | | | Selected Answer: | D. 11 | Correct Answer: | D. 11 | | | | | * Question 3 1 out
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(Elavil) D. Acetaminophen 6. Compounds made from living sources all contain the element A. potassium. B. zinc. C. magnesium. D. carbon. 7. Phenol has a functional group known as the _______ group present in the molecule. A. methyl B. amine C. carbonyl D. hydroxyl 8. Refer to the periodic table of elements (Figure 30 in your study unit) to help you answer this question. The molecular formula of citrate is C6H8O7. What is the molecular weight of this drug? A. 29.08 B. 192.08 C. 192 D. 29.01 9
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Future large scale commercial activities in space will require raw materials obtained from in-space sources rather than from Earth‚ to overcome the high cost of Earth launch. This paper reviews the prospectiveness of non-terrestrial resources and notes the competitiveness of Near-Earth-Asteroids c.f. the Moon and Phobos or Deimos in terms of accessibility and likely resources. Astronomical work over the last fifteen years has increased the number of known Near Earth Asteroids (NEAs) from about 30
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4/27/11 SYNTHESIS AND CHEMILUMINESCENCE OF LUMINOL Abstract: Chemiluminescence occurs in nature and can be found in everyday products. For example‚ the light omitted by fireflies‚ deep sea fish and glow sticks is a result of this process. Luminol was synthesized from from 3-nitrophthalic acid and then combined with potassium ferricyanide and hydrogen peroxide to omit a blue light. The product of this reaction is very unstable and is made by losing a nitrogen and the electrons go from an excited
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Aldol Condensation Wei-Hsuan Tsui 4/16/14 The reaction of an aldehyde with a ketone employing sodium hydroxide as the base is an example of a mixed aldol condensation reaction‚ the Claisen-Schmidt reaction. Dibenzalacetone is readily prepared by condensation of acetone with two equivalents of benzaldehyde -26 -95 113.9 1. Weigh 0.212 g of pure benzaldehyde directly into a 10 x 100 mm reaction tube. 2.
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Synthesis Theory. This experiment was carried out to see how the hydroxyl group on the benzene ring in salicylic acid reacts with acetic anhydride to form an ester‚ and to make aspirin. Synthesis of Acetylsalicylic Acid occurs by protonation of carbonyl (C=O) group‚ and a nucleophilic attack of OH on the acetic anhydride. The ferric chloride test and melting point were used to test the purity of the results. A hypothesized recovery rater of above 50% was expected. salicylic acid
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Preparation of N‚N-Diethyl-m-toluamide (DEET) and its Identification by IR and NMR Spectroscopy Eim A. Chemist CHEM 304 July 10‚ 2005 INTRODUCTION N‚N-Diethyl-m-toluamide (DEET) is the active ingredient in many insect repellants.1 In this experiment‚ DEET will be prepared from m-toluic acid through the intermediate acid chloride and then identified by its IR and proton NMR spectra. The overall reaction is a series of two acyl substitutions and is shown in Scheme 1 below: [pic] Scheme
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