EXERCISE 11 Synthesis of Aspirin (Acetylsalicylic Acid from Salicylic Acid) RAQUID‚ Rency J Group 5 18L I. Introduction Due to the demand of certain reagents in the laboratory in order to perform and conduct further experiments or produce essential compounds‚ chemists continuously develop organic synthesis. This process aims to prepare and synthesize desired organic compounds from commercially or readily available ones by providing the simplest route in synthesizing the compound
Free Aspirin Carboxylic acid Acetic acid
Shabnum Hamidi 11/14/12 Period 2 CST Synthesis Reflection CST & the Criminal Justice System “I am convinced that imprisonment is a way of pretending to solve the problem of crime. It does nothing for the victims of crime‚ but perpetuates the idea of retribution‚ thus maintaining the endless cycle of violence in our culture. It is a cruel and useless substitute for the elimination of those conditions--poverty‚ unemployment‚ homelessness‚ desperation‚ racism‚ and greed--which are at the
Premium Criminal justice Prison Crime
Synthesis Module 5-6 Subject : Executive Development A. Summary of Report No business or strategy is good enough to succeed without strong leadership. Executives are often referred to as leaders. There are methods or techniques engaged by executives for their development. According to Peter Drucker‚ an effective decision making process must go through some basic steps. These steps will not “make” the decision – it will always be a judgement call – but if the steps are ignored
Premium Decision making Decision theory
solution‚ CaCl2(s)‚ xylene‚ t-butyl peroxybenzoate‚ methanol‚ 5% aqueous solution of 1‚ 6-hexanediamine‚ NaOH(s)‚ 5% sebacoyl chloride in hexane‚ glacial acetic acid‚ concentrated H2SO4‚ cotton balls‚ acetic anhydride‚ CH2Cl2 Procedure: For the synthesis of polystyrene‚ 10 ml styrene and 20 ml of 1 M NaOH solution was placed in separatory funnel and they were shaked for several times. Aqueous layer was discarded. The styrene layer was washed with water and dried with CaCl2(s). The styrene was placed
Premium Polymer Solvent Acetic anhydride
Filtrate White needle-like crystals Residue Cloudy white liquid with slightly undissolved solids Crude Aspirin White needle-like crystals Table 4. Recovery Data. Recrystallized Aspirin Wt. of watchglass + filter paper 53.081g Wt. of watchglass + filter paper + product 55.995 Weight of product 2.914 Theoretical Yield 2.61g % Yield 111.65% Table 5. Melting point determination. Crude Aspirin Recrystallized Aspirin Melting point 118-130°C 134-136°C Literature value 135°C 135°C
Premium Solid Primary color Acetic acid
According to Figure 4 and 5‚ the moles of Cu initially obtained and at completion‚ differentiated. It was evident that the initial moles of Cu (0.0254)‚ did not regenerate all the amount‚ as 0.0124 moles of Cu was attained. In regards to this‚ the no. moles that was eliminated was approximately‚ 0.013. Respectively‚ in Figure 3‚ a large deviation amongst the initial and final quantity of copper‚ this implies that the rest of the mass that had diminished‚ was greater than the final product. These
Premium Chemistry Copper Mass
Have you ever wondered why your voice matures when you get older? Well that’s because your vocal cords grow longer making you voice deeper. A male’s voice gets way deeper than a female’s voice though. A male’s larynx grows bigger during puberty making the voice deeper. For some people‚ if you sing‚ that means that your vocal range can increase easily. But if you don’t sing‚ it isn’t necessary for your vocal range to increase. As you grow older‚ your larynx hardens making your voice seem a little
Premium Human voice Acoustics Human development
and lower the self esteem of many women. Because of the shame‚ the topic of periods can be hard to talk about for the homeless‚ which means seeking help is even harder. This source also introduced the problems of bathrooms that provide free toilet paper‚ but do not provide feminine products. However‚ this article concludes that even if feminine hygiene products become more easily accessible‚ women will still have a tough time on finding safe areas to
Premium Homelessness Homeless shelter Saint Francis House
industrial settings due to the simplified synthesis and safety parameters of the overall reaction. Both benzoic acid and methanol are relatively cheap to obtain from a commercial source as well as being easy to store with a relatively long shelf life. The Fischer esterification method is a fundamental and important synthesis process in training our future chemists in both commercial and academic employment and principles. By utilizing this method of synthesis‚ the chemist has the knowledge to utilize
Free Alcohol Ester Carboxylic acid
but all cultures. By determining which artifacts should be secured‚ the audience should be considered. The person responsible needs to consider how the works will appeal to a specific group of individuals. Different kinds of artifacts‚ such as‚ paper‚ photos‚ or pottery will have very different effects on a given
Premium Native Americans in the United States Visual arts Arts