Glen Huang Period 9 Synthesis of Isopentyl Acetate Purpose: To prepare isopentyl acetate from isopentyl alcohol and acetic acid by the Fischer esterification reaction. Materials: West condenser‚ 250 mL round bottomed flask‚ two 250 mL flasks‚ heating mantle‚ boiling chips‚ graduated cylinder‚ sodium bicarbonate‚ isopentyl alcohol‚ glacial acetic acid‚ concentrated sulfuric acid‚ separatory funnel Procedure: 1. Place 50 mL of isopentyl alcohol in a 250 mL round bottom flask and add 60 mL
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In this experiment the initial mass of the sodium carbonate used was 2.69g. In each titration‚ 3 drops of methyl orange was added to the sodium carbonate solution. With this information the titration can begin‚ and the results obtained are shown below: Titration readings Titration Rough 1 2 3 4 5 Initial 0.00 4.30 22.00 21.00 15.00 25.90 Final 4.30 22.00 38.60 37.60 32.60 42.20 Titre (cm3) 4.30 17.70 16.60 16.60 17.60 16.30 Therefore‚ the average titre would be calculated as follows;
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3 is a number‚ numeral‚ and glyph. It is the natural number following 2 and preceding 4. In mathematics Three is approximately π when doing rapid engineering guesses or estimates. The same is true if one wants a rough-and-ready estimate of e‚ which is actually approximately 2.71828. Three is the first odd prime number‚ and the second smallest prime. It is both the first Fermat prime and the first Mersenne prime‚ the only number that is both‚ as well as the first lucky prime. However‚ it is
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Chapter 8 1. Define the term empowerment‚ being sure to distinguish between involvement and empowerment. Involved employees are asked for their input‚ but are not given ownership of their jobs. Empowered employees are given ownership of the process and they are responsible for the products or services generated by those processes. 10. What is a quality circle? A quality circle is a group of employees that meets regularly for the purpose of identifying‚ recommending‚ and making workplace improvements
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carbocations can rearrange to form more stable‚ more substituted carbocations. These carbocations will then result in more stable alkene formation and thermodynamically favor elimination (Zaitsev’s Rule). Carbocation rearrangement can occur via either a 1‚2-methyl/alkyl shift or a 1‚2-hydride shift (Scheme 2). Unexpected product formation from
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Macbeth Assignment‚ Act III “As the weird women promised: and I fear‚ Thou play’dst most foully for’t; yet it was said. It should not stand in thy posterity‚/but that myself should be the root and father/Of many Kings.” -Banquo‚ Act 3‚ Scene 1 These lines are very important to the story of Macbeth‚ because it shows that Banquo is finally figuring out that Macbeth may have done something terrible to become king. The witches claimed Macbeth would first be Thane of Cawdor‚ then Thane of Glamis
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Grignard reaction Abstract: In this laboratory‚ triphenylmethanol was synthesised from reacting benzophenone and bromobenzene using Grignard reaction. As the reaction was to set up to produce a Grignard reagent and then recrystallize it to obtain pure sample. The percentage yield obtained was 55% and its melting point was 161 co which is within the literature value 160-163 co. In addition to that the IR spectroscopy confirmed the molecule structure to be triphenylmethanol. Introduction: The Grignard
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The Grignard Reaction Abstract Through the use of the Grignard reaction‚ a carbon-carbon bond was formed‚ thereby resulting in the formation of triphenylmethanol from phenyl magnesium bromide and benzophenone. A recrystallization was performed to purify the Grignard product by dissolving the product in methanol. From here‚ a melting point range of 147.0 °C to 150.8 °C was obtained. The purified product yielded an IR spectrum with major peaks of 3471.82 cm-1‚ 3060.90 cm-1‚ 1597.38 cm-1‚ and 1489
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Teaching assistant Diploma Assignment 3 Question 1; explain what is meant by the term national curriculum Question 2‚ Discuss 5 key factors that influence learning Question 3‚ Comment on the role of the teaching assistant whilst supporting the planning and evaluation of learning activities Question 4‚ what feedback might a teaching assistant be expected to provide and in what form and to who might they be required to deliver
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Explain the effect of dramatic techniques employed by Shakespeare in the construction of the pivotal Scene 3 in Act 3. Act 3 Scene 3 is one of the most important and pivotal scenes in Othello‚ where Iago speaks meticulously and thoroughly with Othello‚ planting the seeds of suspicion ad jealousy in Othello’s mind which ultimately leads to the tragic events that occur in the latter parts of the play. Shakespeare’s diction for Iago arouses the idea of suspicion and jealousy in Othello; at first
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