Preview

Lab 3: Bromination Of Acetanilide

Satisfactory Essays
Open Document
Open Document
368 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Lab 3: Bromination Of Acetanilide
Lab 3: Bromination of Acetanilide
CHEM 2110
Hassan Alsaleh
0525970
Due date :11/02/2015

Q1:
To find the limiting reagent we need to find the number of moles of acetanilide, and the number of moles of Bromine.

Mass of Acetanilide used = 0.67g
Molar mass of Acetanilide = 135.16g/mol[1]
Number of moles of Acetanilide = (0.67g) / (135.16g/mol) = 0,005 mols

Volume of Bromine = 0.25ml
Density of Bromine = 3.103 g/ml[2]
Mass of Bromine = (0.25ml) X (3.103g/ml) = 0.78g
Molar mass of Bromine = 79.9g/mol[2]
Number of moles of bromine = (0.78g) / (79.9g/mol) = 0,0097 mols

Acetanilide is the limiting reagent

-To find the heoretical yield of p-bromoacetanilide:
Number of moles of p-bromoacetanilide =0,0049 mols
Molar
Continue Reading
View Writing Issues

You May Also Find These Documents Helpful

  • Good Essays

    Hydrocinnamic Acid And N-Bromination Synthesis
    • 449 Words
    • 2 Pages

    Hydrocinnamic Acid And N-Bromination Synthesis

    Hydrocinnamic acid underwent bromination using N-bromosuccinimide and AIBN. As one lab partner set up the reflux apparatus, the other measured the chemicals used in the lab experiment. 2.10 g of hydrocinnamic acid was used. It was observed as white and had a slight cinnamon smell. The amount of NBS was 2.49g and was measured in the fume hood. AIBN was measured at .030 g. 10 mL of acetic acid was also obtained. The reflux apparatus consisted of a 25 mL flask with a stir bar in a water bath. The chemicals were added in the following order: hydrocinnamic acid, NBS, AIBN, and acetic acid. After they were added, the temperature was turned up to come to a constant temperature around 80 C. A condenser was placed on top of the flask so if any evaporated…

    • 449 Words
    • 2 Pages
    Good Essays
    Read More
  • Good Essays

    Bromination Of Arenes Lab Report
    • 869 Words
    • 4 Pages

    Bromination Of Arenes Lab Report

    The purpose of the bromination of arenes was to determine the different reactivities of different hydrocarbons with different hydrogen atoms when reacted with bromine under free-radical substitution. The time it took for the bromine color to disappear was used to determine the order of reactivity of the different hydrocarbons.…

    • 869 Words
    • 4 Pages
    Good Essays
    Read More
  • Satisfactory Essays

    Chem 1211K Lab Report
    • 1855 Words
    • 18 Pages

    Chem 1211K Lab Report

    The identification of the melting point of the organic acid was done to find another characteristic of the acid and to test the purity of the recrystallized pure acid. A 2-4 mm layer of unknown sample was placed into a capillary tube sealed on one end. Then the capillary tube was inserted into the side a Bibby Sterlin device. The plateau was set to 200°C on the melting point apparatus. Once the plateau temperature was reached, the sample was watched carefully. When the sample first began to melt and when it was fully melted was recorded. These numbers were the range of the melting point. A slow melting point of the unknown organic acid and a standard sample was completed next. A new plateau was set about 10°C lower than the observed melting point of the unknown sample. This time once the plateau was reached, the heating was no more than 1°C per minute. This gave a much more accurate read of both melting points. If the standard did not melt in the range listed on the label of the bottle, that meant the machine was not working properly. The standard sample and the unknown organic acid melted in their appropriate ranges.…

    • 1855 Words
    • 18 Pages
    Satisfactory Essays
    Read More
  • Good Essays

    To Prepare N-Butyl Bromide Or N-Bromobutane
    • 768 Words
    • 4 Pages

    To Prepare N-Butyl Bromide Or N-Bromobutane

    The objective of this lab was to prepare n-butyl bromide or n-bromobutane, which is derived from an alcohol and an acid. In this case, n-butyl alcohol and sulfuric acid were the reagents. There were two methods of distillation that was involved in this experiment. The first was by reflux distillation, which is used to speed up a chemical reaction without having the reactants/ products evaporate or explode. Data Table 1 indicates the amount of each reagents that was prepared for the reflux apparatus. However, the reagents, sodium bromide, water, and butanol, were combined and cooled in an ice bath previously before transferred to the apparatus. Sulfuric acid was then slowly added to the cooled mixture, causing the solution to turn a dark yellow.…

    • 768 Words
    • 4 Pages
    Good Essays
    Read More
  • Satisfactory Essays

    Chem Final Review
    • 351 Words
    • 2 Pages

    Chem Final Review

    Start with 6 mol N2, 4 mol O2, 4 mol Cl2, Find limiting reagent and amounts remaining of excess reactants…

    • 351 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Powerful Essays

    Dehydration of an Alcohol: Distillation and Gas Chromatography
    • 896 Words
    • 4 Pages

    Dehydration of an Alcohol: Distillation and Gas Chromatography

    The reagents are to be in a 1:1 molar ratio. The limiting reagent is 2-methylcyclohexanol because it required the least mol amount to complete the reaction.…

    • 896 Words
    • 4 Pages
    Powerful Essays
    Read More
  • Good Essays

    Title: Nucleophillic Substitution Reaction
    • 1152 Words
    • 7 Pages

    Title: Nucleophillic Substitution Reaction

    Introduction: This lab experimented on the reactions of the chemicals that undergoes SN1 or SN2 reaction. Nine different compounds were given to be examined with two reagents - NaI in acetone and AgNO3 in ethanol. The SN1 reaction happens in AgNO3 in ethanol reagents, and SN2 reaction is in NaI in acetone.…

    • 1152 Words
    • 7 Pages
    Good Essays
    Read More
  • Better Essays

    Nitrating Acetanilide and Methyl Benzoate: Electrophilic Aromatic Substitution
    • 3498 Words
    • 14 Pages

    Nitrating Acetanilide and Methyl Benzoate: Electrophilic Aromatic Substitution

    The electrophilic aromatic substitution reaction is the attack of a benzene ring on an electrophilic species resulting in the substitution of a proton with a functional group. The electrophilic aromatic substitution reaction nitration is used to nitrate methyl benzoate and acetanilide with a nitronium ion. Crystallization was used to purify the product. The melting point was used to determine its purity and the regiochemistry of the products. The methyl benzoate reaction product, methyl nitrobenzoate, was determined to be meta-substituted and the acetanilide reaction product, nitroacetanilide, was determined to be para-substituted.…

    • 3498 Words
    • 14 Pages
    Better Essays
    Read More
  • Satisfactory Essays

    Almansoori Lab 17
    • 283 Words
    • 3 Pages

    Almansoori Lab 17

    Note: These should be about the same and either CaCl2 or K2CO3 can be the limiting reagent depending on their initial masses.…

    • 283 Words
    • 3 Pages
    Satisfactory Essays
    Read More
  • Powerful Essays

    Part a: Dehydration of 1-Butanol & 2-Butanol/Part B: Dehydrobromination of 1-Bromobutane & 2-Bromobutane
    • 1583 Words
    • 7 Pages

    Part a: Dehydration of 1-Butanol & 2-Butanol/Part B: Dehydrobromination of 1-Bromobutane & 2-Bromobutane

    The objective of this experiment is to successfully perform a dehydration of 1-butanol and 2-butanol, also dehydrobromination of 1-bromobutane and 2-bromobutane to form the alkene products 1-butene, trans-2-butene, and cis-2-butene. The dehydration reactions react under and acid-catalysis which follows an E1 mechanism. It was found that dehydration of 1-butanol yielded 3.84% cis-2-butene, 81.83% trans-2-butene, and 14.33% 1-butene, while 2-butanol is unknown due to mechanical issues with the GC machine. For the dehydrobromination, with the addition of a strong base that can abstract a proton, which then pushes off the leaving group and a new sigma bond makes a new π-bond all at one time, this is follows E2 mechanism. It was found that the dehydrobromination of 1-bromobutane yielded 100% 1-butene, while 2-bromobutane yielded 13.09% cis-2-butene, 49.95% trans-2-butene, and 36.97% 1-butene.…

    • 1583 Words
    • 7 Pages
    Powerful Essays
    Read More
  • Good Essays

    Copper in Silver Nitrate Lab
    • 1020 Words
    • 5 Pages

    Copper in Silver Nitrate Lab

    Cited: "Limiting and Excess Reagents - Practice Problems." Limiting and Excess Reagents - Practice Problems. N.p., n.d. Web. 22 Apr. 2013.…

    • 1020 Words
    • 5 Pages
    Good Essays
    Read More
  • Satisfactory Essays

    Stereochemistry of Bromine Addition
    • 428 Words
    • 2 Pages

    Stereochemistry of Bromine Addition

    Purpose: To carry out the addition of bromine to trans-cinnamic acid and to identify the product from its melting point.…

    • 428 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Better Essays

    How many moles in my name
    • 1742 Words
    • 11 Pages

    How many moles in my name

    many moles there are in something you have to figure out two things first, the weight of the object…

    • 1742 Words
    • 11 Pages
    Better Essays
    Read More
  • Satisfactory Essays

    Stoichiometry Study Guide
    • 262 Words
    • 2 Pages

    Stoichiometry Study Guide

    a) How many grams CO are needed to react with excess Fe2O3 to produce 591g Fe?…

    • 262 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Better Essays

    Alkene Addition Bromination
    • 1023 Words
    • 5 Pages

    Alkene Addition Bromination

    In this lab we used the greener approach, which involves the addition of bromine across a double bond. When bromine reacts with E-stilbene (trans-1,2-diphenylethene), two new chiral carbons are created from the sp2 carbons, therefore 3 different dibrominated stereoisomers are possible: meso-(1R,2S), or the raceminc mixture-(1R,2R) or (1S,2S)-dibromo-1,2-diphenylethane (Gilbert, 2010). When the bromination ion intermediate proceeds through a stereospecific mechanism, then the meso dibromide is formed exclusively. The racemic dibromides are formed from the concerted syn addition if the mechanism proceeds through a carbocation.…

    • 1023 Words
    • 5 Pages
    Better Essays
    Read More

Related Topics