Lab #5: Grignard Reaction – Synthesis of Triphenylmethanol John Kang Chem 152L Performed: 7/20/04 Date submitted: ________________ Lab Partners: Sang Lee‚ Vicky Lai TA: John Stanko Abstract: This experiment explored the synthesis of triphenylmethanol through the use of Grignard reagents. The percent yield of the product was 10% on a relatively humid day. The melting point was calculate to be 127.2oC with a literature value of 162oC. An IR spectrum of the product was taken and used
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Chemical Reaction Lab Well #1 CuCl2 + Al (shot) - Bubbling - Turning reddish-maroon - 33oC Well #2 CuCl2 + Al (foil) - Bubbling‚ but less than well #1 - Turning black - 28oC Well #3 CuCl2 + Zn - Turned black then red - No bubbling - 29oC Well #4 CuCl2 + NH4OH - Cloudy - No bubbling - 26oC Well #5 CuCl2 + NaCO3 - Not mixing with CuCl2 - Heterogeneous - 25oC Well #6 CuCl2 + AgNO3 - Cloudy - Top layer is white -29oC 1. The more pronounced reaction was the aluminum
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The Market Place Summary The Puritan women waiting outside the prison self-righteously and viciously discuss Hester Prynne and her sin. Hester‚ proud and beautiful‚ emerges from the prison. She wears an elaborately embroidered scarlet letter A — standing for "adultery" — on her breast‚ and she carries a three-month-old infant in her arms. Hester is led through the unsympathetic crowd to the scaffold of the pillory. Standing alone on the scaffold as punishment for her adulterous behavior‚ she remembers
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Aging in Place Today the United States faces many challenges‚ challenges that mirror the changing world we live in as well as the changing dynamics of our country as a whole. There is more than a few issues on the horizon for America‚ and many of these issues can be tied directly to government expenditures. Not the least of which is our current position on social security spending; arguably becoming the largest Ponzi scheme the world has ever seen. However‚ it is the details that really accentuate
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Watching the movie The Hiding Place made me realize how much better and different books are than movies. A major difference between the book and the movie was the beginning. For instance‚ the book started with the watch shops’ 100th Anniversary‚ and the movie started with the Nazis taking away the Ten Boom family’s radio. The movie skipped a lot of events such as the 100th Anniversary and introducing the family and their roles in the story. It would have been better if the movie at least showed the
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26‚ 2010 Experiment No. 2 – Coupled Reactions R.S. Velasco Institute of Chemistry‚ College of Science University of the Philippines‚ Diliman Quezon City‚ Philippines Received Dec. 1‚ 2010 ------------------------------------------------- ------------------------------------------------- ABSTRACT The reaction of carbon dioxide gas to form carbon monoxide and oxygen gas is non-spontaneous (∆G > 0)‚ thus we coupled it with the reaction that has a free energy that is negative
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REACTION PAPER on GOD IS DEAD The lines‚ “God is dead. God remains dead. And we have killed him‚” can be true in literal sense. Subjectively‚ the lines presented are very agnostic and atheistic. Those are against my will and belief as a Roman Catholic faithful. The three shorter mentioned lines are three important points to be clarified about. The first line says‚ God is dead is true in literal sense. In the Scriptures‚ it written that Jesus became man and so he died as a human. Yes‚ I believe
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Observations: Part I: Reaction between iron and oxygen Appearance of steel wool after 20 minutes From (relatively) shiny metal strips to not-so-shiny strips that are stained with dark‚ reddish-brown stuff. Part II: Decomposition of hydrogen peroxide Appearance of potato and hydrogen peroxide combination: Lots of white‚ foamy bubbles around the potato slices. Day 2 Observations: Part III: Reaction between zinc and acetic acid Appearance of penny in vinegar after
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CBSE TEST PAPER-03 CLASS - X (Chemical Reactions and equations) 1. Take about 5 ml of dil. HCl in a test tube and add a few pieces of fine granules to it. Which gas is evolved? (a) Chlorine (b) Hydrogen (c) HCl (d) Nitrogen 2. Dissolving suger is an example of(a) Physical change (b) Chemical change (c) Redox Reaction (d) None of these. 3. Heat is evolved diving (a) Endothermic Reaction (b) Displacement Reaction (c) Combustion Reaction (d) Combination Reaction 4. Which of the following is not a balanced
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complex reactions and reaction sequences‚ where raw materials react together to give the product. Such chemical process often releases energy‚ in the form of heat‚ and the reaction is described as exothermic. Many of these reactions may also evolve gases at high rates‚ and could cause reactor over-pressure. Thermal runaway reaction Runaway reactions are thermally unstable reactions where the heat of reaction can raise the temperature of the reactants sufficiently to accelerate the reaction rate out
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