significant figures and units. (3 points) Table of Masses Empty Dish NaHCO HCl+NaCO3 Final (Dish and Salt Product 24.35 (grams) 10.06 (grams) 40.06 (grams) 31.52 (grams) 2. Write the complete balanced equation for the reaction that occurred in this lab. Hint: H2CO3 is not a final product of the double-replacement reaction; it breaks down (decomposes) immediately into two products. (3 points) NaHCO3 + HCl → CO2 + H2O + NaCl 3. The NaHCO3 is the limiting
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precipitate will be BaSO4. Hypothesis In this experiment the reaction equation will be: CuSO4?H2O + Ba(NO3)2 →Ba SO4+ Cu(NO3)2 In Lab#6 that we have done in Dec 15 2003; we have found out that the mole for hydrate in copper (II) sulfate is 5. Thus‚ by this experiment I will continue to use the answer that I have found in Lab#6. So by using the knowledge from Lab#6 the reaction equation will be: CuSO45H2O + Ba(NO3)2 →BaSO4+ Cu(NO3)2 We can measure the mass of copper (Ⅱ) sulfate and the mass of
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to the flask dropwise in an attempt to start the reaction. However‚ because the reaction did not begin‚ the entire procedure up until this point was repeated‚ this time with an intact stopcock and just the 2.25 mL of bromobenzene as specified in the lab manual. A crystal of iodine was added in order to start the reaction. During the crystallization‚ as the solution was boiling and after four or five full pipets of petroleum ether were added‚ no cloudiness was
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The model involved an SN2 mechanism between the sodium phenoxide salt derived from guaiacol (2-methoxyphenol) and 3-chloro-1‚2-propanediol (Wildman‚ 2003). With the 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
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Chapter 4 Fundamentals of Material Balances Material Balance-Part 1 Process Classification 3 type of chemical processes: 1. Batch process – Feed is charge to the process and product is removed when the process is completed – No mass is fed or removed from the process during the operation – Used for small scale production – Operate in unsteady state March 31‚ 2009 ChE 201/shoukat@buet.ac.bd 2 Process Classification 2. Continuous process – Input and output is continuously
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gravity filtration. Wash the collected solid sparingly with cold water. Allow the water to drain from the collected solid. Then transfer the filter paper and precipitate to a paper towel so that excess moisture can be absorbed. Before you leave the lab‚ place your precipitate (still in its filter paper cone) in a beaker and leave it in your desk to air dry for at least three days. After your precipitate has dried thoroughly‚ weigh it on the analytical balance. The Synthesis of a Nitrite Complex
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http://www.jtbaker.com/msds/englishhtml/b1236.htm (accessed June 17‚ 2009) 2. Reactions of Carboxylic Acids & Their Derivatives. History of Benzocaine. http://www.chemistry.mcmaster.ca/~chem2ob3/20b3_summer2004_exp4.pdf (accessed 2004) 3. CHE Lab Supplement. Fischer Esterification of p-aminobenzoic acid: Synthesis of Benzocaine‚ a local anesthetic. http://tigernet.campbellsville.edu/ics/icsfs/CHE_344_Draft_Lab_Supplement_Spr_2011.pdf?target=76a75934-3ba3-431f-b2af-53908c0081b8 (accessed 2011)
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Date: 19th February 2011 Topic: Lab report 03 Synthesis of organic Sun Screen Introduction: Aldol Condensation‚ a useful carbon-carbon bond-forming is the an example of a reaction named based on the type of product formed. This product formed involves two aldehydes or ketones in the presence of dilute base‚ yields a molecule having both aldehyde and alcohol. The aldol products are β-hydroxyaldehydes or β- hydroxyketones. Condensation reaction is the transformation
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Lab 1: Alkene Addition: Bromination of (E)-stilbene I. Introduction: 1. The purpose of the experiment was to perform an electrophilic addition reaction by using pyridinium tribromide to brominate (E)-stilbene and to identify whether it formed the meso- or racemic product through melting point analysis. 2. This is the mechanism for the bromination of (E)-stilbene. However‚ this is the mechanism for Br2 and in class we us Pyridinium Tribromide instead due to the difficulties associated
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clearly defined to derive the full formula of alum‚ which makes it possible for calculations of theoretical‚ actual and percent yield of alum. Experimental Methods The experiment was constructed based on the guidelines from Franklin and Marshall Lab Manual1. In a 400 mL-beaker‚ 0.5 g of aluminum and 2.01g of potassium hydroxide was prepared and mixed together. An amount of 25 mL of distilled water was poured into the beaker in the hood. The mixture was then continuously stirred to help disperse
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