Synthesis of Aspirin and Tylenol Kyla Wykoff Abstract Aspirin and Tylenol were synthesized by means of crystallization‚ recrystallization‚ and melting point determination. Synthesis produced significantly high percent yields for aspirin‚ however‚ produced extremely low and impure percent yields for Tylenol. A second group was also used to compare results and errors‚ in which they too were also producing extremely low percent yields of Tylenol. Therefore‚ error was based on the specific protocol
Free Aspirin
Weight (grams) Beaker 39.1 grams Beaker + Crystals 41.9 grams Weight of Crystals (Prior to Addition of Ethanol) 2.8 grams Figure 1: This table illustrates the weight of the crystals that were formed before the ethanol was added. 2.8 grams x 5= 14 mL - This is the amount of ethanol that is needed to just dissolve the bromonitrobenzenes at 78.2oC. Weight (grams) Wet Sample of Crystals 1.40 grams Dry Sample of Crystals 0.95 grams Difference Between Wet and Dry Samples
Premium Nitration Electrophilic aromatic substitution Benzene
there would still be impurities present leading to a decreased yield in pure crystals formed. Some crystals may have been lost in the Buchner funnel or when transferring from the funnel to the beaker. Some crystals may have been lost when transferred from the filter paper to the beaker before obtaining the mass of the crystals. I may have also used too much solvent to the acenatilide leading to a smaller recovery of crystals. There may have also been impurities present in the flask used to heat the
Premium Solvent Water Solubility
GB09A D16xH27cm‚crystal glass ‚good $14.00 quality ‚LEDx3W MOQ 50 0.01 100pcs GB09B D20xH35cm‚crystal glass ‚good $14.00 quality ‚LEDx3W MOQ 50 0.01 100pcs GB09C W17xH23cm‚crystal glass ‚good $14.00 quality ‚LEDx3W MOQ 50 0.01 100pcs GB09D D18XH30cm‚crystal glass ‚good $14.00 quality ‚LEDx3W MOQ 50 0.01 100pcs GB09E W16xH16cm‚ crystal glass ‚good quality ‚LEDx3W $14.00 MOQ 50 0.01 100pcs GB09-5 W40xH120cm ‚crystal glass+iron $70
Premium Iron Glass Carbon
An Internship Report on Customer Satisfaction on Land Owners of Crystals Construction Company. Date of Submission: 14th August‚ 2014 An Internship Report on Customer Satisfaction on Land Owners of Crystals Construction Company Supervised By: Professor: Faisal Memon Anjuman-I-Islam’s Allan Institute of Management Studies Prepared By: Mohd Shoaib Warsi Roll No: 48 MMS 2nd Year Date of
Premium Construction
industry‚ first established when Swarovski provided the crystals used to make Marilyn Monroe’s gown for her rendition of ‘Happy Birthday’ to the American President * Collaborations with top costume and set designers have resulted in Swarovski crystals being featured in films including James Bond‚ ‘Ocean’s Thirteen’‚ ‘The Young Victoria’ and ‘Black Swan’‚ to name but a few. Collaborations have also ensued with the music industry and Swarovski crystals have appeared in the shows of Kylie Minogue‚ Beyoncé and
Premium
that are rich in dark Plagioclase feldspar‚ pyroxene and that are dark in their color. Lava: Magma that reaches Earth surface. Texture: The feel of a rock due to its size‚ shape and its arrangement of mineral crystal or sediment in a rock. Porphyry: Igneous rock containing coarse crystals in a finer grained groundmass
Premium Igneous rock Petrology Granite
then recrystallize the solute out of the cooled solvent. The formation of concentrated‚ pure crystals is possible in this recrystallization process if the appropriate cooling rate is applied to the solute and solvent mixture. Consequently‚ a purified‚ solid compound would be produced. Recrystallization involves dissolution of a solid in a solvent at elevated temperatures and the reformation of the crystals as the solution cools‚ allowing for impurities to remain in the solution. Once a solid has been
Premium Temperature Solubility Solid
was employed to obtain the single crystal. The acetonitrile was taken in a beaker and the synthesized material was added to prepare the saturated solution. Then the solution was covered by a perforated sheet and kept separately for slow evaporation without any disturbance at room temperature. The crystal growth condition was optimized and grown crystals were purified by successive recrystallization process. Due to the spontaneous nucleation‚ colorless single crystals were obtained in a period of 15
Premium Water Chemistry Oxygen
Solar Photovoltaic Power Market in Japan by Type (Mono‚ Poly and Thin Crystal Silicon)‚ By Destination (Residential and Non-Residential)‚ and By Export-Import (Produced In Japan‚ Imported and Exported By Japan) – Forecast & Analysis (2013-2020) Solar photovoltaic power market in Japan is the largest solar power market during 2013 and is expected to continue be the world largest solar power market until 2016. The demand for solar power has accelerated after the introduction of feed in tariff‚ which
Free Photovoltaics Solar cell Solar energy