Essay Preparation of 4-Bromoaniline

The main method to manufacture ethyl ethanoate is the esterification of ethanol with acetic acid. A mixture of acetic acid and ethanol with a small amount of sulphuric acid is preheated and put into an esterfying column in which it refluxed. When the mixture is removed it goes to a second reflux column where 85% of acetate is removed. Then the water is mixed with the distillate \and then separated into two layers. One of the top layer is fed into the refluxing column from where the residue which contains 95% of ethyl acetate is distilled to remove any

Explain how the ecosystem was affected by the missing species for each round of the demonstration.

49 is the max amount of viewers available in slide - if you aren’t adding please allow others to

2a. Consumers would certainly see a hike in prices on the imported product and in turn could affect the consumer’s ability to afford neither the domestic made clothing nor foreign made clothing.

"Explore how time and place are used in the prescribed speeches to shape the audience's understanding of how knowledge of the past sheds light on the present" - HSC 2013

Introduction This experiment was undertaken in order to create stilbene dibromide. Bromine is added through electrophilic addition in attacking the double bond. This experiment was also executed to determine the stereochemistry of this addition reaction, whether it created meso products or d,l products. Data and Results Initially, 0.9 grams of stilbene were added to the solution.

9. If you went too far past the end point, please record the results of your trial. Include all sets of data in

The triple bonds of the alkynes are subject to electrophilic additions reactions. Electrophilic reagents, or Lewis acids, can easily react with the pi-electrons of the triple bond, which act as a Lewis base. An equivalent amount of a halogen or hydrogen halide can be added to produce a double bond and a second equivalent amount can be added to create a saturated product.

Additionally, creating a dry environment for the reaction tried to reduce the formation of side products. One possible side product was benzene, which was formed during the protonation of the carbanion on the benzene ring during the formation of the Grignard reagent4. The carbanion was very basic meaning that if there was any water in the glassware or moist air in the environment, some of the carbanion will be protonated by the water creating benzene instead of

1. Purpose: to clarify the mechanism for the cycloaddition reaction between benzonitrile oxide and an alkene, and to test the regiochemistry of the reaction between benzonitrile oxide and styrene.

In order to become a Neuropsychologist you have to obtain many different skills such as reading comprehension, active listening, critical thinking, social perceptiveness, complex problem solving, writing, speaking, science, active learning, judgement and decision making, instructing, service orientation, learning strategies, monitoring, system analysis, systems evaluation, time management, coordination and persuasion. Each and every one of these skills is just as important as one or the other. By having all these skills it will help To become successful in helping your clients. There is a lot of education involved in becoming an aspiring neuropsychologist. The first step is to earn a bachelors degree which is four years long, after that you complete a masters degree of another two years, then the last and final step is to earn a PHD or PsyD which can take another two to four years. So overall you are looking at spending 8-10 years in college if your heart is truly set on becoming a neuropsychologist. The duties and responsibilities of a neuropsychologist may vary depending on their specialties. Some Neuropsychologists, for instance work primarily as researchers. This might involve studying both healthy humans as well as animals, and those with brain injuries and or illnesses. Neuropsychologists might also work in clinical settings as well. This typically involves assessing and diagnosing patients. This

A unimolecular nucleophilic substitution or SN1 is a two-step reaction that occurs with a first order reaction. The rate-limiting step, which is the first step, forms a carbocation. This would be the slowest step in the mechanism. The addition of the nucleophile speeds up the reaction and stabilizes the carbocation. This reaction is more favorable with tertiary and sometimes secondary alkyl halides under strong basic or acidic conditions with secondary or tertiary alcohols. In this experiment, the t-butyl halide underwent an SN1 reaction. Nucleophiles do not necessarily effect the reaction because the nucleophile is considered zero order, (which makes it a first order reaction.) The ion that should have the strongest effect in an SN1 reaction is the bromide ion. The bromide ion should be stronger because it has a lower electronegativity than chloride as well as a smaller radius.

Aromatic compounds can undergo electrophilic substitution reactions. In these reactions, the aromatic ring acts as a nucleophile (an electron pair donor) and reacts with an electrophilic reagent (an electron pair acceptor) resulting in the replacement of a hydrogen on the aromatic ring with the electrophile. Due to the fact that the conjugated 6π-electron system of the aromatic ring is so stable, the carbocation intermediate loses a proton to sustain the aromatic ring rather than reacting with a nucleophile. Ring substituents strongly influence the rate and position of electrophilic attack. Electron-donating groups on the benzene ring speed up the substitution process by stabilizing the carbocation intermediate. Electron-withdrawing groups, however, slow down the aromatic substitution because formation of the carbocation intermediate is more difficult. The electron-withdrawing group withdraws electron density from a species that is already positively charged making it very electron deficient. Therefore, electron-donating groups are considered to be “activating” and electron-withdrawing groups are “deactivating”. Activating substituents direct incoming groups to either the “ortho” or “para” positions. Deactivating substituents, with the exception of the halogens, direct incoming groups to the “meta” position. The experiment described above was an example of a specific electrophilic aromatic

To stabilize the structure, the negative bromide was introduced via backside attack and made an anti product.

Being a partner is "a strong motivating factor," "You're not just an employee; you are an owner of the business. That makes you feel differently about everything."(Tom Miller department store director at JMP)