SYNTHESIS OF TRANS-9-(2-PHENYLETHENYL) ANTHRACENE (A WITTIG REACTION) Introduction: The purpose of this experiment is to convert carbonyl compounds to alkenes using Wittig reaction. In this case we will be synthesizing Trans-9-(2-phenylethenyl) anthracene from benzyltriphenylphosphonium chloride and 9-anthraldehyde. We will also aim to obtaining a high percent yield and purity for the synthesis of Trans-9-(2-phenylethenyl) anthracene. The mechanism for this reaction goes thus:
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Quiz Top of Form Previous PageNext PagePage 1 of 4 Note: It is recommended that you save your response as you complete each question. Question 1 (2.7 points) The combustion of butane‚ C4H10(g)‚ produces carbon dioxide and water vapor. In the balanced equation for this reaction‚ what are the coefficients of butane‚ oxygen‚ carbon dioxide‚ and water‚ respectively? Question 1 options: 2‚ 13‚ 4‚ 10 1‚ 6‚ 4‚ 5 1‚ 6‚ 8‚ 10 1‚ 13‚ 4‚ 5 2‚ 13‚ 8‚ 10 Save Question 2 (2.7
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Data Collection and Processing Aspect One -2.00grams of Sr(NO3)2 used -2.00grams of CuSO4 -Reactants: Sr(NO3)2 and CuSO4 Trial Mass of Beaker (g) Mass of Beaker with Sr(NO3)2 (g) Mass of Beaker (g) Mass of Beaker and CuSO4 (g) Mass of Filter Paper (g) Mass of Filter Paper and Contents (g) 1 111.08±0.01 113.08±0.01 111.1±0.01 113.1±0.01 1.28±0.01 2.93±0.01 2 111.1±0.01 113.1±0.01 111.23±0.01 113.23±0.01 1.27±0.01 2.98±0.01 3 111.26±0.01 113.26±0.01 111.09±0.01 113.09±0.01 1.27±0.01
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GRAAD 12 NATIONAL SENIOR CERTIFICATE GRADE 11 PHYSICAL SCIENCES: CHEMISTRY (P2) EXEMPLAR 2013 MARKS: 150 TIME: 3 hours This question paper consists of 13 pages‚ 1 data sheet and a periodic table. Copyright reserved Please turn over Physical Sciences/P2 2 NSC – Grade 11 Exemplar DBE/2013 INSTRUCTIONS AND INFORMATION 1. Write your name in the appropriate space on the ANSWER BOOK. 2. This question paper consists of TWELVE questions. Answer ALL the questions in the ANSWER BOOK. 3. You
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The Diels-Alder Reaction of Anthracene with Maleic Anhydride 1 The Diels-Alder Reaction of Anthracene with Maleic Anhydride Microscale Diels-Alder Reaction Leah Monroe March 6‚ 2003 Organic Chemistry Lab II Experiment performed on February 25 and 27‚ 2003 Abstract: This experiment involved a reaction between anthracene and maleic anhydride via a Diels Alder reaction to yield 9‚ 10-dihydroanthracene-9‚10-α‚ β-succinic anhydride. Anthracene was the diene and maleic anhydride was the
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Worked solutions to student book questions Chapter 4 Analysing acids and bases Q1. Antacid tablets should normally be chewed before they are swallowed. Why? A1. Antacid tablets are normally chewed to provide a larger surface area for faster reaction with stomach acids. Q2. A laboratory test to determine how much hydrochloric acid is neutralised by a brand of antacid does not give a complete picture of its effectiveness in the stomach. What other factors might be important? A2. Other factors to
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rate has units of mol dm–3 s–1. This is equal to the rate at which the reactants are consumed‚ so for a reaction: R [ ] ∆[ R ] P‚ rate = ____ ∆ P = – _____ ∆t ∆t Figure 602 Corrosion is a slow reaction 161 070809 Chem Chap 6-3 for correct161 161 7/12/2007 8:22:39 AM Chapter 6 CORE Note the minus sign for the reactants‚ which is necessary as the concentrations of reactants decreases with time whereas the concentrations of products increases. Rate
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UNIT 1 MATTER‚ CHEMICAL TRENDS AND CHEMICAL BONDING UNIT 1 MATTER AND CHEMICAL BONDING 1.1 The Study of Chemistry Chemistry is the study of matter and its properties‚ the changes (chemical‚ physical‚ and nuclear) that matter experiences‚ and the energy that is associated with these changes. The term STSE refers to science‚ technology‚ society‚ and the environment. These four areas are
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transforms it into chemical energy cccccccc cthat’s stored in energy-rich carbon compounds. Producers are a source of food for other organisms. d. consumer- a living thing that gets its energy by eating other living things in a food chain. e. limiting factor- a factor or condition that prevents the continuing growth of a pop. in an ecosystem 2. What do the arrows in food chains or webs mean? Eaten by‚ gives energy to 3. The level of the energy pyramid with the most energy contains what
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Introduction: Discovered in the early 1500s by an alchemist by the name of Paracelsus‚ then observed and recorded by Robert Boyle and later Henry Cavendish‚ hydrogen is the most abundant element on earth and is an essential element for life. This element makes up about 90% of all atoms‚ the most popular being water. Today‚ it is seen as the clean fuel of the future‚ is used in products such as fertilizer‚ and it helps aid in the production of plastics‚ pharmaceuticals‚ and even margarine. Also
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