Asprin Experiment on Blackboard Essay

Asprin Experiment on Blackboard Essay

Length: 898 words (2.6 double-spaced pages)

Rating: Better Essays

Open Document

Essay Preview

Aspirin was prepared according to the protocol provided on Blackboard. The three sections to this experiment were 1. Synthesis of Aspirin, 2. Recrystallization of Aspirin, and 3. Characterization of Aspirin.
In the first section, the Synthesis of Aspirin, salicylic acid was weight to be 3.029 grams using mass by difference since it was weighed on a 150 milliliter beaker. 9.23 milliliters of the acetic anhydride and 14 drops of 85 percent phosphoric acid were added to this beaker. A Bunsen burner provided by the laboratory was then used to boil the just mixed combination by producing a flame underneath the positioned beaker on top, and then allowed to cool for several minutes after the Bunsen burner flame was terminated. Two quantities of distilled water were then added to this mixture to make it cool even further, which were 41 drops and 30 milliliters. After cooling for some time, this beaker was placed into an ice bath in order to start the crystallization process. A glass rod was used to scratch around the bottom and the sides to catch all of the crystallized Aspirin that was being formed during this whole process. Then, by using a Buchner funnel and filter paper, which was placed on top of the flask connected to a water aspirator with rubber tubing, the excess liquid was removed from the just scraped Aspirin crystals when the Aspirin was placed on the filter paper. Using a medicine dropper, the Aspirin crystals on the filter paper were washed with distilled water just so that any non-pure substances were removed from the crude product. When these crystals were then ultimately dry, they were placed on a watch glass and put into an oven for 30 minutes. Then they were weighed by mass by difference to yield 2.4667 grams of crude s...


... middle of paper ...


...s the change in the temperature of both of these batches, 6°C for the pure, and 13°C for the crude. In this final sub-section of the Characterization of Aspirin, the values of absorbance were recorded. Initially, 0.0566 grams and 0.0590 grams of pure and crude Aspirin respectively were obtained and each individually placed into beakers (400 milliliter) and had 250.0 milliliters of distilled water added to them. From each beaker, a tiny amount of the just dissolved solutions was transferred to a cuvette, one cuvette for each type of aspirin. Each cuvette was placed into the ultraviolent spectroscopy mechanism which was connected to a computer and absorbance spectrum values were obtained at 298 nm (Figure 5) (0.1987 pure aspirin, and 0.9549 crude aspirin).
Cumulatively these three methods resulted in the determination of the percent purity for each type of aspirin.


Need Writing Help?

Get feedback on grammar, clarity, concision and logic instantly.

Check your paper »

Synchronous and Aynchronous Methodology: Comparing Blackboard and Wimba Essay

- Synchronous and asynchronous methodology enhances course offerings in university teaching and promotes efficiency and effectiveness in today’s business practices. Society is surfing the web on television screens, and Internet – enabled mobile telephones, earning technical and terminal degrees online, thanks to the Internet and the World Wide Web, we attend meetings across the world never leaving home based offices. This is all possible, in the words of Pullen and Snow, 2007, because of simulteaching—a method of teaching and learning that uses both classroom and Internet technology....   [tags: Blackboard, Wimba]

Better Essays
885 words (2.5 pages)

Psychological Experiment : The Stanford Prison Experiment Essay

- In 1971 three psychologists, Craig Banks, Curtis Haney, and Phillip Zimbardo were captivated in finding out whether the rough treatment described among guards in American prisons was due to the aggressive behaviors of the guards or the prisoners lack of respect for law and order (dispositional hypothesis) or had more to do with the prison atmosphere (situational hypothesis) (Maxfield & Babbie, 2009). If the prisoners and guards acted in a non-violent way this would corroborate the dispositional hypothesis, or if the prisoners and guards act the same way as people do in real prisons this would authenticate the situational explanation (McLeod, 2016)....   [tags: Stanford prison experiment, Milgram experiment]

Better Essays
1127 words (3.2 pages)

The Stanford Prison Experiment : Experiment Essay

- Would you go into prison to get paid. Do you believe that you will come out the same or become different. Do not answer that. The Stanford Prison Experiment was an experiment that was conduct in 1971 by a team of researchers led by psychology professor Philip Zimbardo. Seventy applicants answered the ad and were narrowed down to 24 college students, which half were assigned either to be guards or prisoners by random selection. Those 24 college students were picked out from the of 70 applicants by taking personality tests and given diagnostic interviews to remove any candidates with psychological problems, medical disabilities, or a history of crime or drug abuse....   [tags: Stanford prison experiment, Philip Zimbardo]

Better Essays
1279 words (3.7 pages)

Essay The Stanford Prison Experiment : Experiment

- The name of the experiment was the Stanford Prison Experiment, a study that was supposed to be for two weeks, lasting only six days. This study was conducted by Philip Zimbardo, a psychologist that taught at the university. Professor Zimbardo wanted to examine how volunteers would react in a simulated prison. Zimbardo and his colleagues put an advertisement in the local paper asking for participants. Then on Sunday, August 17, 1971 twenty-four applicants were placed in a mock prison, set up in the basement of the Stanford psychology building....   [tags: Stanford prison experiment, Philip Zimbardo, Abuse]

Better Essays
1073 words (3.1 pages)

Essay on The History and Uses of Asprin

- Aspirin (C9H804) Most people know Aspirin as a pill to take when they have a headache or some other ailment. There’s much more to Aspirin than most people know about. This report will explain the chemical properties of Aspirin as well as what the uses are, the history of the chemical, and the discovery of the molecule. Aspirin is also known as Acetylsalicylic acid. It is composed of nine Carbon atoms, eight Hydrogen atoms, and four Oxygen atoms. There are many chemical properties to it. The melting point of aspirin is about one hundred and thirty-five degrees Celsius and the boiling point is one hundred and forty degrees Celsius....   [tags: medicine, pain, household]

Better Essays
847 words (2.4 pages)

The Experiment : Stanley Milgram 's Original Experiment Essay

- 1. In Stanley Milgram’s original experiment where he studied the potential of a person to physically harm another when told to do so by an authority figure, he assigned three roles: experimenter, teacher, and learner. The experimenter and learner were complicit in the experiment’s intended goal to measure the threshold at which a person would disobey a command to administer increasing levels of shock treatment. The shock treatment was presented to the teacher as having 15 level increments ranging from 15-450 volts, with descriptions from “slight shock” to “danger: severe shock.” The experiment was disguised as an attempt to study the effects of punishment on memorization of word groups, and...   [tags: Stanford prison experiment, Milgram experiment]

Better Essays
1018 words (2.9 pages)

A Sociological Experiment On Obedience Essay

- Aaron Keime Block #4 Obedience to Authority: Stanley Milgram (1963) Introduction Stanley Milgram in 1963 decided to do a sociological experiment that tested peoples devotion to authority. How far would people go if an authority figure ordered them to. Milgram took a random sample, meaning he took random people to take part in his experiment. He did so to get a generalized overview of the American population. These random people were to take part in one of the most influential social experiment in history....   [tags: Stanford prison experiment, Milgram experiment]

Better Essays
1042 words (3 pages)

The Milgram Experiment Essay

- The Milgram Experiment (Hart) Stanley Milgram’s experiment in the way people respond to obedience is one of the most important experiments ever administered. The goal of Milgram’s experiment was to find the desire of the participants to shock a learner in a controlled situation. When the volunteer would be ordered to shock the wrong answers of the victims, Milgram was truly judging and studying how people respond to authority. Milgram discovered something both troubling and awe inspiring about the human race....   [tags: Stanley Milgram, Experiment, Obedience]

Better Essays
1574 words (4.5 pages)

Osmosis Experiment Essay

- Background Knowledge: Osmosis definition: Diffusion of water molecules through a semi permeable membrane from a higher concentration to a lower concentration until the concentration on both sides is equal. Osmosis in animal cells: The cell membrane is the partially permeable membrane in animal cells. If the cells were placed in distilled water they gain water, swell and burst. This is known as haemolysis. Osmosis in plant cells: The cellulose cell wall of plant cells is fully permeable. Therefore it’s the cell membrane of a plant cell which acts as the semi-permeable membrane, deciding what gets into and out of the cell....   [tags: Science Experiment]

Better Essays
582 words (1.7 pages)

Essay on Blackboard Inc.

- Blackboard Inc. It is a growing trend in today’s society in that the internet is spreading. It is more common for a young child before the age of 10 to use the internet more than an adult beyond the age of 25. [1] The internet and age of computers have enabled students and adults to search for information more efficiently. Everything possible can be found online by just a click of a mouse. It is fast, reliable, and functional in many settings, school for one. Education has taken a turn, online, in adapting to the advances with the internet....   [tags: Essays Papers]

Free Essays
1653 words (4.7 pages)