IMPORTANT TOPICS OF CHEMISTRY 2009 Chap No.1 Q.1- Define chemistry & branches of chemistry any three? Q.2-Lrean about history of chemistry for short question and fill in the blanks? Q.3 what is scientific method? Define hypothesis and theory? CHAP NO.2 Q.1-Learns about any three laws of chemical combination only statement and example? Q.2-Define chemical reaction and types of chemical reaction with one example for each with the help of chemical equation? Q.3-Define MOLE‚ Atomic no
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PPV‚ which is the abbreviated term for phenylenevinylene‚ has light emitting properties since it has a large conjugated system. This organic molecule is possible to be formed from dichloro-para-xylene which then reacts with methanol and thiolane. The nucleophile would be the thiolane. A good leaving group in this case would be chlorine. After thiolane attacks‚ it results with dithiolane-xylene. The second step is reaction with sodium hydroxide. The hydroxide it used for deprotonation upon the substituted
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Caroline Guidry Dr. Beverly A. Clement Organic Chemistry 2423‚ Section 304 25 October 2017 Lab 6: Natural Products I The main goal of this experiment was to employ isolation techniques to derive chemicals from two different natural sources and study their properties (Clement 91). The two natural sources used in this experiment were an orange (the peel contains limonene‚ which is a terpene) and a dichloromethane solution of clove oil (which contains eugenol‚ an acetogenin). To isolate the eugenol
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EXP-10 CHEM 233L SYNTHESIS OF p-BROMOANILINE Introduction: In this experiment‚ p-bromoaniline was synthesized in three steps starting from aniline. Since the amino group of aniline is a strong activator of aromatic ring‚ direct bromination is impractical (equation 1). In order to make a desired product‚ amino group needed to be protected as the acetamide which also maintained ortho and para position but slowed down the rate of reaction (equation 2). Slow reaction rate would increase
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have a group attached that is not easily named as a substituent‚ the benzene ring is often treated as a group to this substituent. The benzene ring attachment is called a phenyl group. The compound is named according to the rules for naming alkanes‚ alkenes and alkynes. Trivia: Phenyl comes from “phene”‚ a European term used during the 1800’s for benzene. Example: CH2 = CH – CH – CH3 3- Phenyl-1-butene Substituted benzene: position and name substituent/s (alphabetical) + benzene Note 1:
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attraction between two molecules‚ pulling them together (also known as London dispersion forces). The magnitude pof Van der Waals force depends on the relative molecular mass‚ high mass produces a larger force. Boiling points of the alkanes data and alkenes data These very clearly illustrate the effect of increasing Van der Waals attractions as the relative molecular mass increases. The influence of branching in the alkanes can also illustrate the effect of different surface areas on the Van der Waala
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The process of naming compounds allows chemists to communicate formulae in words rather than in chemical symbols. There are‚ however‚ a few rules about naming compounds which need to be known in order to write a formula in word form or translate a compound in word form into chemical symbols. Ionic compounds If the compound is ionic‚ then the name of the cation (usually metal) comes first‚ followed by the ’compound’ name of the anion. To find the compound name of an anion‚ replace the end of the
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Year 12 Chemistry 2011 Student Handbook Table of Contents Errors 2 Significant Figures 2 States of Matter in Equations 2 Revision Hints 3 Equations 4 VCAA 2008-2011 Key Skills 6 Unit 3 VCAA Study Design 7 Unit 3 Timetable 8 Unit 3 Work Set Questions 10 Unit 4 VCAA Study Design 11 Unit 4 Timetable 12 Unit 4 Work Set Questions 14 ERRORS When instruments are manufactured‚ there is a specified uncertainty within which the instrument is designed
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(Author’s name) (Professor’s name) (Course details) (Date Abstract The aim of the lab was to separate and analyse analgesic drugs in a drug tablet. The method used to separate the components was Thin Layer Chromatography (TLC) with silica adsorbent as the stationary phase and 0.5% glacial acetic as the mobile phase. In one plate‚ five known samples were used as the reference‚ that is: Aspirin; Caffeine; Ibuprofen; and Salicylamide. Aspirin and Salicylamide were the only samples that fluoresced
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The report “China Coal Tar Industry Report‚ 2013-2016″ by Research in China is now available at chinamarketresearchreports.com. Contact sales@chinamarketresearchreports.com with “China Coal Tar Industry Report‚ 2013-2016” in subject line and your contact details to purchase this report or get your questions answered. Synopsis Amid China’s economic slowdown in 2013‚ the coke price continued to fall and the coking industry remained weak‚ thus the situation of oversupply would not get changed in
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