Objectives This experiment aims to analyse the given sample of acetaminophen‚ Sample A‚ to see if it complies with the monograph in the British Pharmacopoeia (BP) for the identification of acetaminophen‚ the limit test for p-aminophenol and the assay for acetaminophen. Procedure Identification for Acetaminophen Potassium bromide (KBr) disc technique was used to prepare the sample for the infrared absorption spectrophotometry. The agate mortar and pestle were cleaned with absolute ethanol using
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Preparation In a dry round bottom flask‚ 1.5mL of cyclohexanone was added with 5mL of methanol. The solution was cooled in an ice bath for 3 minutes after which 0.2g of sodium borohydride was measured and added to the solution. Upon mixing‚ a gas was formed (bubbles). The round bottom flask was removed from the ice bath and placed at room temperature. After 10 minutes at room temperature‚ 5.0mL of 3M NaOH and 2.0mL of distilled water was added to the solution. Isolation and Characterization The
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Labs‚ Inc. sales@HOLscience.com / www.HOLscience.com / Toll Free 866.206.0773 a laboratory manual of small-scale experiments for the independent study of General College Chemistry 50-0125-CK-01 LabPaq® is a registered trademark of Hands-On Labs‚ Inc. (HOL). The LabPaq referenced in this manual is produced by Hands-On Labs‚ Inc. which holds and reserves all copyrights on experiences. The laboratory manual included with a LabPaq is intended for the sole use by that years of research
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100 M NaOH 40 mL of 96% ethanol phenolphthalein as an indicator (3 drops per titration) 325 mg non buffered aspirin tablets Materials Used: One spatula Two Erlenmeyer flasks‚ 250 ml One weighing scale (with uncertainly +-0.005g) 1000 ml graduated cylinder Buret One metal stand Buret clamp 50 cm3 conical flask Procedure: The metal stand was assembled with the buret. The latter one was filled with 0.100 M NaOH to just above the 0.00 mark. There was no bubbles apparent in the burette
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Title: Laboratory Techniques and Measurements Purpose: To properly use‚ understand‚ and correctly convert the scientific measurements such as: finding density‚ converting centimeters to millimeters‚ 3 different units of temperature‚ etc… Procedure: I used a metric ruler to measure the length of the objects‚ a thermometer to determine the degrees of the water‚ and a scale to determine the mass of the designated objects. I used the proper equipment to measure out or hold the item. After I gathered
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Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor
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The first part was the preparation of 250ml of 1.0 M sodium hydroxide (NaOH) solution from a solid. Using a top-loading balance‚ ____ g of NaOH was transferred to a clean Erlenmeyer flask. Distilled water was then added until the solid was completely dissolved. The solution was transferred to a 250ml volumetric flask and mixed. Once mixed‚ the solution was bulked to the mark and mixed again. Finally‚ the solution was transferred to a clean plastic bottle and labeled. The second part was the
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recrystallized product was collected. This was low due to the fact that some of the crude product was not recrystallized and was instead used to take a melting point of the crude product. It was also low due to several of the crystals being stuck inside the flask and not going into the funnel. The percent recovery from recrystallization was 54.21%. The melting point of the crude product was 261 - 264°C. The melting point of the recrystallized product was 261 - 263°C. Comparing these values with the literature
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and placed in a pre-weighed 25 mL round bottom flask‚ along with 2.5 mL of glacial acetic acid and a magnetic stir bar. Then the reaction apparatus was assembled‚ the dry tube was charged with conc. sodium bi sulfate‚ the 25 mL round bottom was attached to the apparatus‚ and 5 mL of Br2/HBr mixture was obtained and placed in the round bottom. The reaction took place for 20 minutes. An orange liquid was obtained and placed in a 125 mL Erlenmeyer flask along with 25 mL of water and 2.5 mL of conc
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