Structural Biochemistry/Organic Chemistry/Methods of

It is also important to note those structures that are rather neutral Some key concepts are bases will react with acid and vice versa Also the aqueous layer will contain a charged molecule or ion most of the time Step 1: Upon dissolving the mixture in a good solvent such as methylene chloride a strong acid is added to the mixture The strong acid is added so that it will react with any

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Separation of Naphthalene and Benzoic Acid by Extraction

13 10 2007Can someone tell me the mechanisms involved in this process? 1g of a 1:1 mix of naphthalene and benzoic acid were dissolved in diethyl ether then extracted using first NaOH then water the separated liquids: naphthalene in ether - mixed with anhydrous sodium sulfate and then filtered and dried ended up with pure napthalene NaOH extract containing benzoic acid - HCl added chilled

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Separation of a mixture lab report

Separation of the neutral compound and the unknown acid: Place 0 20 g of your Lab Instructor Date LAB REPORT EXPERIMENT 4 Extraction: A Separation and Isolation Technique Separation of Three-Component Mixture Weight Compound In the mixture There is a huge array of separation techniques available and they Below is available on methods of binary and ternary liquid mixtures lab 7 summer

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Lab 1

Purpose of the lab- To separate a mixture containing salt calcium carbonate (CaCO3) and a graphite We would like to determine the percentage of salt in the mixture Equipments and Materials 1 Water 2 Acid 3 Balance 4 Flask 5 Glass stirrer 6 Filter paper 7 Funnel 8 Digital scale Procedure 1 Place one gram of mixture in a filter paper And place the filter paper in the flask 2 Put

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Experiment 3: Acid/base Extraction and Separation of

Experiment 3: Acid/base Extraction and Separation of Acidic and Neutral Substances Introduction You will be given a mixture that contains three substances in equal amounts: benzoic acid 2-naphthol and 1 4-dimethoxybenzene (p-dimethoxybenzene): Your task: to separate these three compounds by taking advantage of differences

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Cool Science Experiments for Teens

To observe the effect of acid rain on plant growth prepare an acidic water solution and a neutral water solution The pH of acid rain is four Add one teaspoon of vinegar to two cups of distilled water to produce water with a pH matching that of acid rain Test the water with a pH testing kit and add more water or vinegar to achieve the desired pH Fill one glass jar about half full with the

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Solubility of Organic Compounds

Experimental procedure Report template INTRODUCTION The objective of this experiment is to investigate the solubility characteristics of some simple organic molecules and to look at relationships between the solubility properties of an organic molecule and its structure and vice versa This leads to the important idea that structure dictates function which means that by knowing the structure

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Separation of Acidic Basic and Neutral Compounds

Separation and purification of products from synthetic reaction mixtures is very important Extraction methods are often employed to separate the desired product from unreacted starting materials or from undesired side products in the reaction mixture In this experiment a mixture containing an acidic a basic and a neutral

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Drying Organic Solutions

Not for acidic compounds: Sodium sulfate Na 2 SO 4: High: Slow: Generally useful : Of the five drying agents in the above table magnesium sulfate is available as a fine powder and the rest are of a larger particle size Calcium chloride magnesium sulfate and sodium sulfate are the three most commonly used agents These are shown below Because these compounds will deliquesce (absorb

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ANALYSIS OF UNKNOWNS

B acidic compound (phenols pKa ~10 or carboxylic acids pKa less than 5) C neutral compound (*exception: if you get an ester it HOW THIS SEPARATION SCHEME WORKS Acidic and basic organic compounds can be separated from neutral organic compounds and from each other by taking advantage of acid/base character differences in pK a values and solubility differences between their

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Hplc Column (hector)

-Suitable for acidic basic neutral compounds separation-High resolution-High efficiency-High peak capacity-Low metal content in silica HECTOR-M Introduction Wide range selection of stationary phase supports customers' demands from analytical to Semi-prep scale For reversed phase mode C18 C8 C4 NH2 CN and phenyl phase are

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Separation of Mixtures of Solids Lab Report Example

Next since benzoic acid is less soluble than salt it crystallized at cooler temperatures of the aqueous solution The salt was then transformed back to its solid form by allowing water to evaporate (Masterton and Hurley 2004) QUESTIONS A How did your proposed procedures or flow charts at the beginning of this experiment compare to the actual procedures of this lab exercise? In my proposed

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Separation Science

Ionic substances are more soluble in water than in organic solvents Neutral substances are more soluble in organic solvents than in water 3 The key to understanding how to do this separation relates to the effect that pH will have on the different categories of compounds Neutrals – Whether the pH is acidic or basic these will remain neutral under all circumstances Organic acids

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Separating Acids and Neutral Compounds by Solvent

Lab 02 Separation of an Acid From a Neutral Compound by Extraction (1) 14-Friedel Crafts Acylation Ferrocene Chapter 03 Wade Solvent Extraction lecture Seperation and Extractions Lab Report Fractional Distillation Lab Solvent Extraction Lab Report ferrocene Separation Lab Preparation of 4-Methylcyclohexene Impact of a Jet Report Sublimation Cobalt Complexes Lab - Unfinished Baixe

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TWO

produced during the bicarbonate extraction compared to some of the other lab groups' unknown samples A percent composition of 16% benzoic acid supports that there was relatively little benzoic acid compared to the other components Balmer 7 Answers to Assigned Questions : Page 146 (8 11) 8) Fig 2 shows a flow chart for the separation of benzoic acid 4-nitroaniline and N-(4-nitrophenyl

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ORGANIC CHEMISTRY LABORATORY EXPERIMENTS FOR ORGANIC

Write-Up: As soon as you are finished write this lab report in your notebook as a normal lab write-up and hand it in You will also need to draw and label the chemical reaction using the software available on the CNS network Staple or tape this in your write-up * A problem with this procedure is that very often crystals do not initially form One gets a viscous oil that will eventually

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ANALYSIS OF UNKNOWNS

B acidic compound (phenols pKa ~10 or carboxylic acids pKa less than 5) C neutral compound (*exception: if you get an ester it HOW THIS SEPARATION SCHEME WORKS Acidic and basic organic compounds can be separated from neutral organic compounds and from each other by taking advantage of acid/base character differences in pK a values and solubility differences between their

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Experiment 9 Chem 276 Fall Semester 2010 Page 1 of 8

If these substances contact your skin alert your TA immediately and treat your skin immediately with a large amount of running tap water to limit skin burns 2 It is wise to treat all laboratory organic compounds as toxic by ingestion Take care to remove organic residue on your hands and clothing before leaving the lab Always

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Isoelectric Point

ALOIS G PNTENER in Colorants for Non-Textile Applications 2000 2 3 The isoelectric point The isoelectric point is a key criterion not only for selection of dyes and dyeing methods but also for the whole leather manufacturing process [11] Pelts have an isoelectric point of approximately 5 Chrome leather has an isoelectric point of 4 5-6 5 depending on the chrome masking process at the

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