Separation Of Mixture Of Solid Lab Essay

Title Page Chelsea Maksin Organic Chemistry Laboratory 1 Column and Thin Layer Chromatography: The Separation of Spinach Pigments Russ Hoburg 02/15/2012 Abstract The main goal in doing the column and thin layer chromatography was to separate spinach extract into its components based on polarity and then to analyze the components. The separation of the spinach extract was done using the column chromatography with the wet/slurry packing method. Alumina was inserted into the column to act as

Separating Mixtures Aim: The aim of this experiment is to use separation techniques to separate a mixture containing polystyrene beads, salt, sand, gravel and iron filings. Hypothesis: The hypothesis stated that, firstly, the materials could be sifted through the sieve. Secondly, the iron filings could be separated from the mixture. Thirdly, that the salt would be removed from the mixture, through dissolving and evaporation. Fourthly, the polystyrene beads could be removed in the dissolved mixture

Once the final solid product was obtained in both reactions the melting point procedure was used to determine the level of remaining impurity of the final product, comparing the experimental and expected values found in literature. In conjunction with the melting point

NAME: ____Amy Hua_______________________ Experiment 4a Adsorption Chromatography (TLC) Summary of Points for Experiment 4a: Item Possible Points Actual Points Pre-Lab 2 Notebook: N/A N/A Purpose/Table of Reagents 2 Corrections 2 Blank Spaces 2 Signatures 2 TLC data (4-in notebook) 8 Coherent 2 Conclusions (absent here) 1 Sub-Total = 21 multiply Sub-Total x 2= 42 Report: N/A N/A Introduction 2 Data and Calculations 8 Less Points-Missing Data N/A N/A Unknown Identity 10

Lab 5: Preparation of Synthetic Banana Oil September 20th, 2012 Purpose: The main purpose of this experiment was to synthesize banana oil (isopentyl acetate.) Ester are often prepared by the Fischer esterification method, which involves heating a carboxylic acid with an alcohol in the presence of an acid catalyst. Theory: Synthesize isopentyl acetate by combining isopentyl alcohol with acetic acid and sulfuric acid and then heating the reaction mixture under reflux for an hour. The alcohol

CHEM 2123 and 2125 – Organic Chemistry Lab I and II GUIDELINES FOR WRITING LAB REPORTS INTRODUCTION Writing reports in organic chemistry lab may differ from the way it’s done in general chemistry. One goal of this course is to introduce you to the record keeping methods used in research labs. Such methods are designed to organize experimental data in a format similar to that required for publication in major scientific journals. Here are some important considerations that apply in research settings

along with heat was required to initiate this process. The contents of the flask became light brown and cloudy. The flask was then removed from heat, and the rest of the bromobenzene mixture was added to the flask dropwise over 15 minutes and constantly stirred gently and heated periodically. Once the entire mixture was absorbed, 2 mL of fresh anhydrous diethyl ether was used to rinse the conical vial and then transferred the wash into the reaction vessel. This entire reaction took approximately

Sulphonation – The Process Most electrophilic substitution reactions are irreversible but sulfonation is an exception. Treatment of benzene with "oleum" (a solution of SO3 in concentrated sulfuric acid) will give the sulfonic acid, the electrophilic species being sulfur trioxide which is Lewis acidic. Fig – 1 Sulphonation : Benzene equation The sulfonic acid can be converted back by treatment with hot aqueous acid. The reason for this reversibility is the fact that the Wheland intermediate is overall

CH 220 Lab Report 1: Fractional Distillation of a Binary Mixture and Gas Chromatography This experiment was done in order to understand both fractional distillations and gas chromatography. In addition, this experiment was done to separate and identify two liquids that made up an unknown mixture. Gas chromatography was used to figure out the ratio of these two liquids. In this experiment, distillations were done. This is a technique that utilizes the differing boiling points of two or more compounds

Introduction The process Sublimation is a method used to disconnect a -natural product from different undesired compounds and after that it is purified by the change of state from solid to vapor. The majority substances, under typical states claiming climate pressure, progress its stage with a temperature rise from solid to liquid and to gas. Meantime other compounds, like iodine and carbon dioxide experiences sublimation at this pressure. By bringing down the temperature and pressure of a system