Abstract In this lab we separated components of a simulated preparation‚ panacetin and making use of its acid base properties. To obtain such a pure compound‚ the compound we want must be separated from its other natural components‚ which can be done by manipulating physical and chemical properties. Panacetin contains sucrose‚ aspirin and an unknown which can be acetanilide or phenacetin in which phenacetin was created and weighed. Introduction In this lab our basic goal was to make the
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but after the copper was transformed into Cu(OH)2 to CuO to CuSO4 and finally into Cu‚ the mass of the recovered copper was 1.1023g; the percent yield was 109%. Since the percent yield is more than 100%‚ an error must have occurred somewhere in the lab. A possible error could have occurred due to removing the evaporating dish from the Bunsen burner quickly not allowing all the water to be evaporated. Therefore‚ there was water present in the final mass and it could have caused the percent yield to
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Qualitative Observations of Double Displacement Reactions Lab Table 1.0 Qualitative Observation of Products Formed |Balanced Chemical Equations |Qualitative Observations | |BaCl2 (aq) + 2NaOH (aq)( BaOH2(aq) + 2NaCl(s) |An aqueous solution formed | | |Precipitate
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Chemistry Lab Report Jeffrey Kenneth Bangero Introduction Firstly we calculated the mass of the beaker and then we put the assigned grams of sodium carbonate and calcium chloride. Then we add 50 ml of distilled water to each substance‚ sodium carbonate dissolved faster than calcium carbonate. After we mixed both sodium carbonate and calcium chloride and they form a solid precipitate. Then we poured it a funnel with a filter paper to get the solid precipitate. Purpose ● The purposed
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Title: Liquid Chromatography Author: Gloria Contreras Lab Partner: Jose Montanez Instructor: Teresa Potter Date Work Performed: January 13‚ 2015 Date Submitted: January 20‚ 2015 Abstract: In this lab‚ liquid chromatography is used to separate the Red 40 and Blue 1 dyes inside of grape flavored Kool-Aid. It was determined that the 5% isopropanol will remove the Red 40 dye from the stationary phase. The 28% isopropanol will remove the Blue 1 dye from the stationary phase. The more
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Colligative Properties 202-NYB-05 (Group 06.) By: Jordan Hribar 1034044 Partner: Anthony Cuillierier Teacher: Daniel Baril Experiment Done: February 23rd‚ 2011 Experiment Number 2. Introduction Some of the properties unique to solutions depend only on the number of dissolved particles and not their identity. Such properties are called colligative properties. The colligative property that will be examined in this experiment will be the freezing point depression as an example
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Recrystallization Abstract: Technical grade aniline was reacted with acetic anhydride to give acetanilide a dark brown color‚ due to the presence of impurities. Crystallization of the crude product from water was combined with decolorization with activated carbon‚ furnished pure acetanilide as white flakes‚ melting point 112-115°C‚ yield 70.3%. Experimental: 2 grams of technical grade aniline and 15ml water were placed in a 125ml Erlenmeyer flask. Then‚ 2.5ml of acetic anhydride was
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In the prac‚ the aim was to determine which combinations of each solutions created precipitate and which did not. The prac proved to work in achieving this for most examples‚ although few were anomalous and did not give sound results. Take for instance‚ barium chloride and silver nitrate shown in the discussion. The result shown was cloudy and appeared to have precipitated where in actuality it should not have. It is also good to note that some instances of a precipitate not forming visibly may be
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rupture during the extraction process most often blow off their caps. However‚ occasionally (1 in four years) the tubes themselves can rupture. With the safety cannons described above the worst senario is that water is sprayed up to the ceiling of the lab. In one occasion a plastic graduated cylinder was used as a safety cannon‚ the tube ruptured and the graduated cylinder splintered into very sharp projectiles. • The dry ice must be a powder for this experiment to work properly‚ a hammer and an
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Purifying Acetanilide by Recrystallization Results: Acetanillide Solubility of acetanilide in water is 5.5g/100mL at 100C 0.53g/100mL at 0C PERCENT YIELD/THEORETICAL YIELD: Discussion: Acenatilide is a synthetic organic compound introduced in therapy in 1866 as a fever-reducing drug. Its effectiveness in relieving pain was discovered soon thereafter‚ and it was used as an alternative to aspirin. The solvent that I selected to recrystallize the
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