ipl-logo

2-Bromobutane Lab Report

2033 Words9 Pages

Chem 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. In this experiment, dehydration and dehydrobromination …show more content…

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. In this experiment, dehydration and dehydrobromination undergo the elimination reaction, which includes E1 and E2 reaction. E1 is unimolecular elimination, which is removing H-X substituent to form a double bonds. The mechanism of E1 reaction includes 2 steps, formation of carbocation and deprotonation. E2 is bimolecular elimination, which is the removal of two substituent groups to form an alkene. The hydrogen removed must be anti to the leaving group. The mechanism of E2 reaction has only one steps, which is displacement of leaving group by removing hydrogen. The rate of the E1 elimination is based on substrate only, while it depends on both substrate and base in E2 elimination. E1 elimination is favored by weak base and ptotic solvents, while E2 is favored by strong base, high concentration of nucleophile and aprotic solvents. The major product of E2 elimination is the more substituent alkene, while the products of E1 elimination are trans-cis alkene and terminal

Show More
Related
795 Words | 4 Pages

Exercise 1 1. Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). Using your results from Data Table 1 as a guide, how would you test this material for the presence of sodium bicarbonate? B BoldI ItalicsU Underline Bulleted list Numbered list Superscript Subscript33 Words

Read More
967 Words | 4 Pages

The dehydration of 2-methylcyclohexanol takes place at the bottom of the Hickman still. As the Hickman still heats up within the sand bath, the products evaporate and travel higher up in the still where they condense into a liquid and fall within the collection ring, thus separating the product from the remaining water. Drierite (CaSO4) is also added as a drying agent to absorb any leftover water within the product. The purity of the product will then be analyzed with infrared spectroscopy, paying attention to OH peak if it is present. Chemical Reactions: Data and Observations: Material Volume Mol.

Read More
931 Words | 4 Pages

This occurs because the sample vaporized into the gas phase and is placed into a capillary under controlled temperature and pressure. As the mobile phase and is placed into the capillary under controlled temperature and pressure. As the mobile phase is flowed through the capillary, more volatile compounds should elute first. Accordingly, the alcohol should elute last, preceded by the alkyl halide.

Read More
400 Words | 2 Pages

Sodium bromide and 1-butanol are dissolved in water since the bromide ion from the sodium bromide and the four carbon chain from the 1-butanol are the desired components of 1-bromobutane. In order to get the sodium bromide and the 1-butanol to react sulfuric acid is added to react with the sodium bromide and combine with the sodium ion producing hydro-bromic acid. Later, when the flask is heated the bromide ion will be able to combine with the four carbon chain of the 1-butanol. During the process of this reaction the reagents were kept cool in an ice bath to avoid the possible evaporation of any of the solution.

Read More
704 Words | 3 Pages

As relayed in Table 1, the results concluded that the only molecules to react and form a precipitate were 1-chlorobutane and 1-bromobutane. 1-bromobutane formed a precipitate first, after two minutes and eight seconds. 1-cholorobutane did not for a precipitate until after heat was applied after seven minutes and fifty-one seconds. 2-cholorbutane, 2-bromobutane, and tert-butyl-chloride did not react at all during the course of the experiment. 1-bromobutane was expected to react first, followed by 1-chlorbutane.

Read More
1654 Words | 7 Pages

Other major pieces of equipment, called water baths, were also used. These baths allowed for varying levels of temperature incubation, and were setup in different locations of the room where the experiment took place. Finally, a spectrophotometer was also employed so that absorbance readings could be gathered. These absorbance readings were extremely important because without them, it would have been very difficult to determine if there was an increase or decrease in the enzyme’s rate of reaction. All but one of these materials were constant conditions.

Read More
565 Words | 3 Pages

Carbon dioxide is a natural component of Earth’s atmosphere and has an important role in maintaining a livable life on the planet. All animals, including humans, make carbon dioxide when they breathe out. This experiment can be used to teach two things: it is an example of a chemical reaction and it shows how carbon dioxide builds up in water. Bromothymol blue is a chemical indicator that is used to find acids and bases. It is mostly used to show the pH of fish tanks and pools, measuring from 6.0 (yellow color) to 7.6 (green to blue).

Read More
899 Words | 4 Pages

H20 + 2 O2 This experiment will use 1% catalase solution and 3% hydrogen peroxide solution, both diluted into water so the reaction slows down. Temperature will be controlled in this experiment to change the reaction speed of the enzyme and the substrate, this is what the experiment is looking at. The effect of the temperature will be determined by how much gas is released in two minutes, which will change the pressure inside the test tube and will be measured by a gas

Read More
475 Words | 2 Pages

The purpose of this experiment is to study the mechanism of enzyme-catalyzed reaction in order to determine its effects with changes in a) enzyme concentration, b) substrate concentrations c) inhibitor concentrations d) PH and e) Temperature. Enzymes are composed of residues that have their own characteristics. The degree to which those side chains are protonated by changes in PH will affect the formation of the enzyme-substrate complex as those side chains are involved in many interactions for example

Read More
1022 Words | 5 Pages

Lab Report 10: Nitration of Bromobenzene Raekwon Filmore CM 244 Section 40 March 27, 2018 Introduction: For this experiment, nitration of bromobenzene was the focus of the lab. The benzene is an aromatic compound and when it reacts with wither a mixture of sulfuric acid or nitric acid creates what is known as a nitro group.

Read More
1479 Words | 6 Pages

ABSTRACT The experiment aims to find the concentration of acetic acid in the vinegar sample by titrating it to a standardized NaOH solution, a base solution. A standardized 0.100 M NaOH solution was prepared from an available concentration of NaOH specifically a 1.00 M NaOH. The volume of the standardized solution (titrant) used which is 0.100 L was calculated using the M 1 V 1 = M 2 V 2 relationship.

Read More
867 Words | 4 Pages

GC-MS (Gas Chromatography-Mass Spectrometry): GC (Gas Chromatography): Gas chromatography is a method which is used for the separation and analysis of organic compounds (i.e. volatile compounds). For separation prime factor is volatility i.e. more volatile compounds elute first from the column and then detected by detector. It is used for testing the purity and isolating of compounds.

Read More
720 Words | 3 Pages

Results With Respect to Potassium Bromate(V) The table below shows my results when varying the concentration of potassium bromate(V):    Concentration of Potassium Bromate(V) (mol/dm-3) Time Take For the Mixture to Turn Colourless (seconds)

Read More
713 Words | 3 Pages

Step 5-Data analysis: A computer based data system like the open lab chemical data system is used to process digitalized data signal and uses various mathematical calculations to determine peak areas, peak heights peak width and retention time. The chromatograph is the graphical representation of the sample elution and response complete. Each peak is identified by specific time that it leaves the column and passes through the detector called the retention time.

Read More
1567 Words | 7 Pages

Aerobic catabolism is the first initial step in microbial degradation of PAH which involves incorporation of two atom of oxygen into the aromatic nucleus of the PAH in an enzymatic reaction catalysed by peroxidases, monoxygenase and oxygenase (Das and Chandran, 2010). The incorporation of oxygen into the structure of PAH is the rate limiting step. Oxidation reaction by dioxygenase enzymes incorporates two atoms of oxygen into PAH ring structure. Initial oxidative reaction by dioxygenase enzyme leads to the formation of cis-dihydrodiol (Bamforth and Singleton, 2005; Das and Chandran, 2010). Cis-dihydrodiol undergoes dehydrogenation reaction to form catechols.

Read More

More about 2-Bromobutane Lab Report

Open Document