benzocaine and stabilizes the neuronal membrane which decrease its permeability to sodium ions.1 In this experiment‚ the synthesis of benzocaine is carried out by the acid-catalyzed esterification of 4-aminobenzoic acid with ethanol.2 Theoretical Yield: 1.25g/MW 137 = .009 moles C2H6O 20mL / MW46 =0.435 moles C9H11O2N .009 X 165.19 = 1.49g Purpose Statement: The purpose of this experiment is to synthesize benzocaine by esterification using 4-aminobenzoic acid with ethanol. Experimental
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Chem 201 Lab October 21‚ 2011 Lab #6: Preparation of 2-chloro-2-methylbutane – an Sn 1 Reaction Purpose The purpose of this experiment was to prepare an alkyl halide‚ 2-chloro-2-methylbutane by reacting 2-methyl -2-butanol (t-amyl alcohol) with hydrochloric acid. Alkyl halides are of wide interest because they are widespread and have diverse beneficial and detrimental impacts .The overall reaction is given below: Procedure 1 ml of 2-methyl-2-butanol was measured using 1 ml syringe and
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reactions will occur to yield alum. Calculations: Aluminum foil: 0.5035 grams Alum & Watch Glass: 21.7691 grams Watch Glass: 15.1560 grams Alum: 6.6131 gram Theoretical Yield of Alum: 2Al(s) + 2KOH(aq) + 4H2SO4 + 22H20 -> 3H2(g) + 2KAl(SO4)2 + 12H2O(s) 0.5035gAl x 1molAl/ 26.98gAl = 0.0186 mol Al 0.0168molAl x 2molAl / 2mol KAl(SO4)2 = 0.0186mol KAl(SO4)2 0.0186mol KAl(SO4)2 x 258.2g/ mol KAl(SO4)2 = 4.8 gKAl(SO4)2 Theoretical yield = 4.8g KAl(SO4)2 Percent Yield Alum: 6.6131gKAl(SO4)2
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(oxalate)ferrate(III) trihydrate in a two step process‚ to learn new laboratory techniques such as decantation‚ recrystallization‚ gravity and suction filtration. Also the purpose of the experiment is to determine the actual‚ theoretical‚ and percent yields of product‚ and characterize the final compound by determining the number of waters of hydration by gravimetric analysis List of Observations: After adding (15 mL distilled water/5 drops of 3 M H2SO4) to ferrous ammonium sulfate hexahydrate
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Williamson Ether Synthesis specializing in producing ethers‚ it was ideal for this lab because of the alcohol and the alkyl halide used. After the synthesis and isolation of Gauifenesin was completed‚ the melting point ranges were observed and percentage yields were calculated to compare with the values of authentic guaifenesin and guaiacol. Reflux was used to synthesize Guaifenesin. Guaifenesin is an expectorant‚ meaning it helps loosen congestion in one’s chest and throat‚ making it easier to cough
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Name: David Kennedy Date: 11/5/14 Project No: 131 Title: Butyl 2-Cyano-(3‚5 dichloro-phenyl)-2-propenoate Abstract: The targeted trisubstituted ethylene compound Butyl 2-Cyano-(3‚5 dichloro-phenyl)-2-propenoate and its copolymer with styrene was prepared in this lab. The base catalyzed Knoevengael condensation of butyl cyanoacetate and corresponding aldehyde led to the forming Butyl 2-Cyano-(3‚5 dichloro-phenyl)-2-propenoate. The analyses that were used to prove its composition and structure
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the design and construction of the end product. This test is usually done prior to any decision being made on the materials use. The theory behind tensile testing is to measure the stress-strain response of the material. By doing so you obtain the yield strength and ultimate tensile strength as some of the results and also provides information on how brittle/ductile the material is‚ which is vital in the future usage of the material in testing. In this test the aim was to perform tensile tests on
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Fixed Income Zero coupon bonds Professor Anh Le 1 – Zero coupon bond and zero yields A zero coupon bond (or zero for short)‚ as its name suggests‚ is a bond that pays no coupons. It only pays the face value on the maturity date. Not surprisingly‚ sellers of zero coupon bonds have to offer them at a deep discount in order to sell them to the public. For example‚ a 30‐yr zero‚ face value $1‚000 could be selling for as little as $53.54. One question you may ask right now is: i
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B consists of a 5.95-year zero-coupon bond with a face value of $5‚000. The current yield on all bonds is 10% per annum. (a) Show that both portfolios have the same duration. (b) Show that the percentage changes in the values of the two portfolios for a 0.1% per annum increase in yields are the same. (c) What are the percentage changes in the values of the two portfolios for a 5% per annum increase in yields? a) The duration of Portfolio A is Since this is also the duration of Portfolio
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Introduction: The purpose of this experiment is to use sodium borohydride to reduce benzil. However‚ stereochemistry allows for five possible products. If only one carbonyl group is reduced during the reaction a racemic mixture of benzoin will be the product that is produced. After the first reduction a chiral center forms causing the second reduction to occur from only one side of the ketone. Depending on which side the second reduction take place there are three possible products including: a racemic
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