unknown sample and 0.12 grams of benzoic acid were weighed and placed in a test tubes. 10 ml ether was added to the mixture and the test tube was shaken to ensure that the mixture was homogenous. The solution was then transferred to the separatory funnel and 5 ml of 1 M NaOH
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80.1 5.5 0.88 Slightly in H2O Toluene 110.6 -93 0.87 Slightly in H2O Bromobenzene 155-156 -30.8 1.50 Insoluble Dibromobenzene 220.40 87.31 0.96 Insoluble MATERIALS: Graduated cylinder Weight scale Buchner funnel Filter flask Rubber stopper Hot plate Thermometer Conical funnel Various size beakers Fractionating column (for reflux) Various sized round bottom flasks Distillation head Condenser Vacuum adapter Clamps and stands Test tubes PROCEDURE: Pre Lab: The experiment
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To the extracted liquid‚ 5mL of NaCl was added and put into a separatory funnel to remove the water layer. 5mL of 10% K2CO3 was added to the extracted organic layer‚ and then placed into the separatory funnel for the removal of the water layer. NaCl was then again added to the organic layer‚ and put through the separatory funnel to again remove more of the water layer. After the water removal using the separatory funnel took place‚ MgSO4 was added until clumping subsided. This addition was done
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fathered by Ke Francis ;an art teacher‚ owner of Hoop snake Press‚ and manager of the university of central Florida’ publishing company‚ Flying Horse Press. A layered style supports the arrangement of items painted. “A rabbit trap layered under a funnel with a flying fish that’s face to face with a drawn image of Nike‚ the Winged Victory of Samothrace‚ a Greek pagan goddess. Francis’s work is a seventy-two and a forth by seventy-eight and an eight canvas with acrylic based paint.” (MMFA) He signed
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The Cyclohexanol Cycle and Nylon Synthesis Samantha Stuckey CHE 233L Section 302 Department of Chemistry‚ DePaul University‚ 1110 W. Belden Avenue‚ Chicago‚ IL 60614 smstuckey@comcast.net May 8th‚ 2013 Abstract The first three labs of this organic chemistry experiment involved carrying out the first three parts of the Cyclohexanol Cycle. The cyclohexanol was first converted to cyclohexene and water by simple distillation (product: 6.5395g‚ 79.75% recovery). The cyclohexene then underwent a bromination
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EXPERIMENT II: SEPERATION OF A MIXTURE OF SOLIDS PURPOSE: The purpose of this experiment was for me to become familiar with the separation of mixtures and solids and to learn separation techniques based on the chemical properties of a substance. PROCEDURE: Before beginning‚ I set up a data table to record data from the experiment. 1. Separating out the Iron a) I used my digital scale to determine the mass of my weighing dish. b) I emptied the entire mixture of solids from the plastic bag into
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Objective: To extract caffeine from tea powder using polar - nonpolar solvent extraction technique. Theory: The technique used to separate an organic compound from a mixture of compounds is called Extraction. Extraction process selectively dissolves one or more of the mixture compounds into a suitable solvent. The solution of these dissolved compounds is referred to as the Extract. Here the organic solvent dichloromethane is used to extract caffeine from an aqueous extract of tea leaves
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to the resulting solution. Fit the test tube with a cork stopper and take it back to your hood. Gravity filter this suspension (25-mm funnel fitted with fluted fast-grade filter paper - see instructor) into a 3.0-mL conical vial containing a magnetic spin vane. Wet the filter paper in advance with distilled water and blot the excess water from the stem of the funnel. Use an additional 0.5 mL of distilled water to rinse the test tube and pass that through the filter paper into your vial. Your aniline
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DETERMINATION OF COPPER BY COMPLEXATION‚ SOLVENT-EXTRACTION AND SPECTROPHOTOMETRY ABSTRACT To determine the concentration of copper in an unknown solution by using copper complexation‚ solvent extraction and spectrophotometry. Standards are used to create a calibration curve and the unknown concentration of copper is then calculated by using the linear equation from the calibration curve. The concentration of copper in the unknown solution 201 was found to be 12.57± 0.25 μg/mL. INTRODUCTION Copper
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throughout the experiment. Objective: To make a salt and to calculate the percentage yield of the salt. Reagents & Apparatus: 20 mL Sulfuric acid 1M‚ 2g Copper (II) carbonate‚ Bunsen burner‚ Tripod stand‚ Gauze‚ White tile‚ Filter funnel and filter paper‚ Glass rod‚ Spatula‚ 100 mL Glass beaker‚ Conical flask 250 mL‚ Petri dish‚ Balance Procedure: Stage 1 1 Add 20 mL 1M sulfuric acid in a 100 mL beaker. Heat carefully on the tripod with a blue flame until nearly boiling
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