Isomers Lab Report Essay
In this experiment, different properties of stereoisomers, specifically enantiomers and diastereomers, were analyzed. R-Carvone and S-Carvone, which are enantiomers, were analyzed for opposite plane polarization and different odor. An isomerization was performed on dimethyl maleate to convert it into dimethyl fumarate, a diastereomer.
Isomers are compounds with the same empirical formula, but with different arrangements of the elements. Enantiomers, a type of isomer, are two compounds that are chemically similar, but are arranged as non-superimposable mirror images of each other. Enantiomers tend to have many similar chemical properties, such as melting point and solubility. In this experiment a pair of enantiomers, S-Carvone and R-Carvone
…show more content…
This melting point data confirms that isomerization occurred, since the melting point of dimethyl maleate is only -17℃, while the melting point of dimethyl fumarate is 102-105℃. This also highlights the fact that diastereomers have different chemical properties, such as melting point. Since the experimental melting point range almost overlaps with the expected range, there is little error in this measurement. The small amount of error could have occurred from the MelTemp temperature rising too quickly, leading to errors when reading the …show more content…
The results were expected, since a difference in the odors of the enantiomers was detected, and the polarimeter showed that the two enantiomers rotated light to about the same degree in opposite directions. In the polarimetry experiment, the two absolute values of degrees of rotation were not exactly identical due to small errors caused by dust or other impurities in the sample. In the oil wafting experiment, some may not have been able to differentiate between the two enantiomers if their noses lacked the chiral receptors required to recognize this
6.03 Calorimetry Lab
775 Words | 4 PagesIn the first part of the experiment, Part A, the standard solutions were prepared. As a whole, the experiment was conducted by four people, however, for Part A, the group was split in two to prepare the two different solutions. Calibrations curves were created for the standard solutions of both Red 40 and Blue 1. Each solution was treated with a serial 2-fold dilution to gain different concentrations of each solution.
Isopod Lab Report
1285 Words | 6 PagesIntroduction: Isopods are crustacean, which is split into smaller groups, called order. Scientifically Isopoda order is called isopods, which include pill bugs and sow bugs (Crustacean class). Most of the time isopods are mistaken for “bugs” since they look like insects.
Hydrates Lab
737 Words | 3 PagesIn the lab, “Properties of Hydrates,” the purpose was to compare the properties of several well observable hydrates and to determine if dehydration is a reversible or irreversible change. The lab consisted of attaining a pea-size sample of each compound, burning it over a bunsen burner, and comparing the starting mass and the mass lost after the combustion. These results are important to be able to identify a variety of different chemicals that contain water molecules as part of their crystalline structure. Some can be removed by heating (resulting in evaporation) and some remain mostly unchanged. In this lab the answer will be found.
Molecular Structure Lab Report
1051 Words | 5 PagesMolecular Structure Lab Report: Determining Polarity Instructions: For this investigative phenomenon, you will investigate why certain substances, such as oil and vinegar, don't mix. To do so, you will combine various compounds, compare their solubility, and determine their polarity. Fill in each section of this lab report and submit it to your instructor for grading.
2-Bromobutane Lab Report
2033 Words | 9 PagesChem 51LB Report Ngoc Tran - Student ID # 72048507 The purpose of this lab is to examine the composition of three components of gas products of elimination reaction under acidic condition by conducting the dehydration of primary and secondary alcohol, and under basic condition by conducting the base-induced dehydrobromination of 1-bromobutane and 2-bromobutane. Then gas chromatography is used to analyze the composition of the product mixtures. Gas chromatography (mobile phase) is used to analyze the composition of three components of the gas products. A syringe needle with gas product is injected into the machine, and the component is eluted and the composition is related to the column or the peaks.
Electrophilic Aromatic Substitution Reaction Lab Report
821 Words | 4 PagesThe purpose of this experiment was to learn about the electrophilic aromatic substitution reactions that take place on benzene, and how the presence of substituents in the ring affect the orientation of the incoming electrophile. Using acetanilide, as the starting material, glacial acetic acid, sulfuric acid, and nitric acid were mixed and stirred to produce p-nitroacetanilide. In a 125 mL Erlenmeyer flask, 3.305 g of acetanilide were allowed to mix with 5.0 mL of glacial acetic acid. This mixture was warmed in a hot plate with constantly stirring at a lukewarm temperature so as to avoid excess heating. If this happens, the mixture boils and it would be necessary to start the experiment all over again.
Tetraphenylnaphthalene Lab Report
779 Words | 4 PagesBenzyne Formation and the Diels-Alder Reaction Preparation of 1,2,3,4 Tetraphenylnaphthalene Aubree Edwards Purpose: 1,2,3,4-tetraphenylnaphthalene is prepared by first producing benzyne via the unstable diazonium salt. Then tetraphenylcyclopentadienone and benzyne undergo a diels-alder reaction to create 1,2,3,4-tetraphenylnaphthalene. Reactions: Procedure: The reaction mixture was created. Tetraphenylcyclopentadienone (0.1197g, 0.3113 mmol) a black solid powder, anthranilic acid ( 0.0482g, 0.3516 mmol) a yellowish sand, and 1,2-dimethoxyethane (1.2 ml) was added to a 5-ml conical vial.
Lab Report Scaffold: Bromination Of Trans-Cinnamic Acid
904 Words | 4 PagesThe product obtained was (2S, 3R)-2, 3-dibromo-3-phenylpropanoic acid and (2R, 3S)-2, 3-dibromo-3-phenylpropanoic acid, which are enantiomers. This was determined through melting point analysis. The melting point range for the product was 198 to 202 degrees Celsius, which is a lot close to the given melting point of the anti-addition product, 202-204 degrees Celsius. The given melting point range was 93.5-95 degrees Celsius. Furthermore, the syn-addition product is unlikely and difficult to produce due to stereochemistry selectivity.
9-Fluorenone Lab Report
382 Words | 2 PagesNevertheless, the latter is not used in this experiment since it is very reactive and extremely flammable. On the contrary, NaBH4 is relatively mild and it can be used with protic solvents. In this manner, 1.507 grs of the ketone 9-fluorenone were mixed with 30.0 ml of 95% ethanol in a 125 ml Erlenmeyer flask. The bright yellow mixture was stirred during 7 minutes until all the components were dissolved.
Nucleophilic Substitution Reactions Lab
1039 Words | 5 PagesThe possible explanations and changes to make are similar to the previous questions. Conclusion and Future Experiment 18. The identity of the product and unknown were 4-tert-butylbenzyl phenol ether and tert-butyl phenol respectively. The key to making this discovery was the melting point and TLC results!
Methyl Trans-Cinnamate Lab Report
1399 Words | 6 PagesAbstract – Methyl trans-cinnamate is an ester that contributes to the aroma of strawberry. It can be synthesized by an acid-catalyzed Fischer esterification of a methanol and trans-cinnamic acid under reflux. The solution was extracted to obtain the organic product, and evaporated residual solvent The yield was 68%, but there is some conflicting data regarding the purity. The melting point, IR, GC-MS indicate a highly pure desired product whereas 1H NMR shows there are unreacted reagents still present.
Wittig Reaction Lab Report
1125 Words | 5 PagesThis was proved by utilizing the IR spectrum to verify the C =O was not in the final product as it lacked the 1640 cm-1 peak. The melting point of 113-115 degrees C proved that the final product obtained was the E-Stilbene. The TLC plate proved that the E and the Z product was produced, show cased by the double intensity of the DCM spot to the final product’s spot, both which had an Rf of 0.92. The double intensity proved that both products were produced, but through heating and filtering, the Z-Stilbene was
Properties Of Substances Lab Report
1038 Words | 5 PagesProperties of Substances Express Lab 1)The purpose of this lab was to compare the physical properties of different types of solids and how the properties of solids are determined by their intermolecular forces and their intramolecular bonds. Then we were to classify each type of solid as either ionic, metallic, non-polar molecular, polar molecular, or network. Paraffin wax classified as a non-polar molecular, Silicon dioxide was classifies as a network, Sodium chloride was classified as ionic, Sucrose was classified as polar molecular and Tin was classified as metallic. (2)The intermolecular forces that are present in Paraffin wax are dispersion forces, because it is non-polar and carries a negative charge. Followed by Sucrose that has
Ionic And Covalent Compounds Lab Report
902 Words | 4 PagesAlso, although this likely served no contribution in disheveling the results, using a stirrer of the same material to ensure the separate testing of each substance will be as uniform as
Water Hydration Lab Report
603 Words | 3 PagesIntroduction: In this lab, of water in a hydrate, or a substance whose crystalline structure is bound to water molecules by weak bonds, is determined by heating up a small sample of it. By heating, the water of hydration, or bound water, is removed, leaving only what is called an anhydrous compound. Based on the percent water in the hydrate, it can be classified as one of three types: BaCl2O ⋅ 2H20, with a percent water of about 14.57%, CuSO4
More about Isomers Lab Report Essay
6.03 Calorimetry Lab
775 Words | 4 PagesIsopod Lab Report
1285 Words | 6 PagesHydrates Lab
737 Words | 3 PagesMolecular Structure Lab Report
1051 Words | 5 Pages2-Bromobutane Lab Report
2033 Words | 9 PagesElectrophilic Aromatic Substitution Reaction Lab Report
821 Words | 4 PagesTetraphenylnaphthalene Lab Report
779 Words | 4 PagesLab Report Scaffold: Bromination Of Trans-Cinnamic Acid
904 Words | 4 Pages9-Fluorenone Lab Report
382 Words | 2 PagesNucleophilic Substitution Reactions Lab
1039 Words | 5 PagesMethyl Trans-Cinnamate Lab Report
1399 Words | 6 PagesWittig Reaction Lab Report
1125 Words | 5 PagesProperties Of Substances Lab Report
1038 Words | 5 PagesIonic And Covalent Compounds Lab Report
902 Words | 4 PagesWater Hydration Lab Report
603 Words | 3 Pages