RECRYSTALLIZATION OF ACETANILIDE De Ocampo‚ Yves Aaron Julian Q.‚ Dela Vega‚ Roderick B. Jr.‚ Elguira‚ Cedric Tristan D. Enriquez‚ Joanne B.‚ Gabat‚ John Elliot N. Group 5 2D-Medical Technology Faculty of Pharmacy‚ University of Santo Tomas ABSTRACT The experiment was executed in order to purify compounds through recrystallization. Recrystallization is the primary used operation for purifying solid organic compounds that differ in solubility at different temperature. It is a process of dissolving
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A small amount of the unknown (approximately the tip of the spatula was used for all the pigments) was added into each clean dry test tube. For the first test 1 mL of 3 M of HNO3 was added. As soon as the acid came into with the solid‚ the pigment was observed to dissolve while also turning the solution into a pale clear colour. The same amount was used for the HCl reagent. As soon as the acid touched the pigment it yielded in a clear solution (solid dissolved after a few shakes). When the KI was
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I’d be happy to give you some suggestions if you’ll take them. I was an English major in college and I currently work as a copywriter for a company‚ so hopefully I can give you a few tips to make your letter more formal. How about this: Dear Office of Student Financial Aid‚ My name is *your name* and I am writing to ask you to appeal my suspension of federal aid. The fall and summer semesters were a very stressful and overwhelming time in my life because I was not only returning to school after
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Recommendation Letters To Whom It May Concern: This letter is my personal recommendation for Mrs Alemneh Agegn. Until just recently‚ I have been ’s immediate supervisor for years. I found him to be consistently pleasant‚ tackling all assignments with dedication and a smile. Besides being a joy to work with‚ he is a take-charge person who is able to present creative ideas and communicate the benefits. He has successfully developed several helpful plans in his department. During his work‚ we saw
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................................................ 1-4 Audit Engagement Letters ............................................................................. 5-9 Recurring Audits ............................................................................................ 10-11 Acceptance of a Change in Engagement ........................................................ 12-19 Appendix 1: Example of an Audit Engagement Letter Appendix 2: ISA 210 Amended as a Result of ISA 700 International Standard
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Literature in its purest form has the remarkable ability to transport us to the time and place that it is set. It can even give us insight into the time period the literary artists lived in and how it affected their works. Andrew Marvell’s “To His Coy Mistress‚” set in the 1650’s‚ has an overarching theme of mortality‚ in that one must make the most of what little time they have alive. Similarly‚ Percy Bysshe Shelley’s “Ode to the West Wind‚” set in the early 1800’s‚ has a mortality theme‚ although
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Introduction The purpose of this lab is to determine which pigments in a plant support or effect photosynthesis‚ based on starch production‚ which wavelengths of light are involved in photosynthesis‚ and identify plant pigments found in a plant leaf by means of paper chromatography. Life on Earth is dependent entirely on the energy from the Sun‚ not only to keep the planet at a suitable temperature but also to provide the energy required to sustain life. The energy of the Sun‚ in the form of
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RECRYSTALLIZATION Group Medical Technology Organic Chemistry Laboratory ABSTRACT Recrystallization is one of the simplest and most widely used technique for purifying organic solids through the differences in solubility at different temperatures. It is also the process in which the solid to be crystallized is dissolved to either a hot solvent or a hot solvent mixture and is cooled in a solution.In this experiment‚ acetanilide‚ the crude product of acetylation of aniline and acetic anhydride
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Hi Peg: Very few comments and very few corrections—mostly punctuation. I have indicated them in red—see check marks in margin. I would have made two simple changes in Taylor Hunts’ excerpt; however I figure it was a direct quote from his book. Love mom The Introduction The three body types‚ or doshas‚ in Ayurveda are Vata‚ Pitta‚ and Kapha. Though we are [I would eliminate the word all here‚ but you don’t have to →] all made up of all three‚ a tendency towards one is common. This tendency can
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90210 goes over many concepts of developmental psychology. I would rate the TV show an 8/10 because there are certain aspects of the show that are realistic to other teenagers. Still‚ there are many exaggerations to this show. To start off‚ Annie and Wilson are attending a new school‚ this causes anxiety for anyone. Making new friends‚ meeting new teachers and trying to belong is stressful for anyone. When Annie is introduced to her new class a student named George calls her a “narc”. This goes to
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