1)With 1-mL graduated pipet‚ measure 0.40 mL of the unknown labled “no.XX-.40 mL 2) With another 1ml graduated pipet measure 0.10 Ml of the unknown labled “no. XX- 0.10 mL” 3) Add the compounds to the same Erlenmeyer flask 4) Add 2.0 mL of 95% ethanol and 1.5 mL of 2 M sodium hydroxide solution to the flask 5)Stir with magnetic stirrer for 15 minutes or longer if precipitate still forming (if cloudy after 15 mina heat mixture on a asteam bath or in boiling water for 10 mins then cool
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Abstract In this experiment‚ 4-(4-chlorophenyl)-3‚4-dihydropyrimidine-2-one is synthesized in a solvent-free reaction‚ where urea‚ ethyl acetoacetate‚ 4-chlorobenzaldehyde are used as the reactants and p-toluenesulfonic acid is used as the catalyst. This reaction is similar to the original synthesis of DHPM by Pietro Bignelli‚ as it incorporates a single step. Due to its environmentally friendly conditions‚ such as the use of solar energy as a heat source and the lack of solvent‚ this synthesis of
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eye pain and seasonal allergies‚ and an intranasal spray for the short term relief of pain requiring opioid level intervention. (Lippincott‚ 2010). Ketorolac is a member of the pyrrolo-pyrrole family of NSAIDs and has been shown to exhibit analgesic activity in animal models; although the exact mechanism of action of all NSAIDs is not completely understood the action of ketorolac‚ as with other NSAIDs‚ is believed to be related to the inhibition of prostaglandin synthesis (Keltman‚ 2010)
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CHEMISTRY (Theory) Time allowed : 3 hours General Instructions: (i) All questions are compulsory. Maximum Marks : 70 (ii) Marks for each question are indicated against it. (iii) Question numbers 1 to 8 are very short-answer questions and carry 1 mark each. (iv) Question numbers 9 to 18 are short-answer questions and carry 2 marks each. (v) Question numbers 19 to 27 are also short-answer questions and carry 3 marks each. (vi) Question numbers 28 to 30 are long-answer questions and carry 5 marks
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The purpose of Module 11A was to test for the presence or absence of a particular set of functional groups through the use of wet chemical tests. In this manner‚ Unknown A which was a colorless solution‚ was first tested with 2‚4-DNP which after mixing for a few seconds formed a bright yellow precipitate. Although this confirms the presence of either a ketone or aldehyde group‚ one simple chemical test does not completely specify the presence or absence of other functional groups. Therefore‚ a second
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Experiment #9 – Identification of Aldehydes and Ketones Introduction Aldehydes and ketones share the carbonyl functional group which features carbon doubly bonded to oxygen. In the case of ketones there are two carbon atoms bonded to the carbonyl carbon and no hydrogens. In the case of aldehydes there is at least one hydrogen bonded to the carbonyl carbon; the other attachment may be to a carbon or a hydrogen. In all cases the carbon(s) that are attached to the carbonyl group may be aliphatic (not
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Synthesis of Tetraphenylcylopentadienone Post-Lab Report Purpose- This experiment illustrates the use of adol condensation for the synthesis of a five-membered carbocylic ring. It is also a good demonstration of the impact extended conjugation has on the absorption of visible light. The reactants are bright yellow in color while the products are a very deep purple color appearing almost black. Introduction- The synthesis of Tetraphanylcyclopentadienone was a further example of the adol
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[19593 Organic Chemistry of the Tramition Elements. Part r. View Online 551 Downloaded by University of Washington on 01 February 2011 Published on 01 January 1959 on http://pubs.rsc.org | doi:10.1039/JR9590000551 113. The Organic Chemistry of the Transition Elements. Part I. Tricarbonylchromium Derivatives of Aromatic Compounds. By B. NICHOLLS M. C. WHITING. and Many aromatic compounds‚ ArH‚ displace carbon monoxide from chromium hexacarbonyl with the formation of complexes Cr(CO)
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modest solubility in water. Although phenols are structurally similar to alcohols‚ they are much stronger acids‚ however they are weaker acids compared to carboxylic acids. In the experiment‚ the following samples of aldehydes are used‚ 1) Benzaldehyde It is the simplest aromatic aldehyde. It is employed to confer almond flavor. It is used chiefly as a precursor to other organic compounds‚ ranging from pharmaceuticals to plastic derivatives. 2) Formaldehyde It is the simplest form
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| 2013 | | INSTITUTE OF HEALTH SCIENCES-GABORONE MICROBIOLOGY LABORATORY REPORTCOMPILED ON: 13/02/2013DUE DATE: 19 /02/2013BY;KEMO KEBAITSANG ID;3005LECTURER; MR MOLEFHI | Identification of entrobacteriaceae | Escherichia coli cause 99% of URINARY TRACT INFECTION. | DAY 2 GRAM STAINNING Materials * Two slides * Saline water * Culture organisms * Wire loop * Gentin violet * Iodine * Safradin * 95% alcohol Procedure * Prepare slide smears of both
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