10mL pipet 2 aspirator 1 50mL graduated cylinder 1 10mL graduated cylinder 1 50mL beaker 1 100 mL beaker 1 glass stir rod 1 ring stand 1 clamp 1 250mL beaker Distilled water pH paper reagents: 10mL 6M acetic acid 10g solid sodium acetate 25mL 1M naOH NH3 NH4Cl 0.1 solution Safety: Acetuc acid‚ HCl and NaOH are corrosive. They attact the skin and cause permanent damage to the eyes. If one of these solutions splashes into your eyes‚ use the eyewash immediately. Hold your eyes
Free PH Acid dissociation constant Acid
Methyl Ethanoate combination of Methanol and Carboxylic Acid doesn’t have a strong smell and smells somewhat like water. Butyl Ethanoate formed by Butanol and Carboxylic Acid has a very sweet and fruity smell. Propyl Ethanoate formed by Propanol and Carboxylic Acid consist of a strong nail polish remover smell. Ethyl Ethanoate formed by Ethanol and Carboxylic Acid has a weak nail polish remover smell when compared to Propyl Ethanoate. Draw structural
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Column Chromatography ________________________________________________ You have already performed two chromatography experiments: gas chromatography and thin layer chromatography. All chromatography experiments involve passing a mixture of analytes through a system that includes a mobile phase and a stationary phase. The partitioning of the analytes between these two phases determines the rate at which they pass through the system‚ and (in theory) allows them to be separated from one another. Column
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understanding of how chromatography works and how to operate instruments used to carry out the procedures is an important lab technique to learn. Experiment: Thin Layer Chromatography. Lab #10-1 Paper Chromatography. Lab #10-2 Theory: Ethyl Acetate-Solvent used in TLC (mobile phase). Dichloromethane- Solvent used to dissolve all samples used to compare unknown in TLC Silica Gel Plates- TLC plates. Stationary phase Elemental Iodine- used to accentuate the spots on the TLC plates so we
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t Design and preparation of buffers effective at different pHs Abstract These experiments aimed to determine the optimum pH ranges various buffers are effective and provide opportunity for the use of the Henderson-Hasselbalch equation to prepare a buffer of a specific pH. Three different buffer systems were initially investigated; volumes of weak acid and weak bases of specified concentration were prepared and titrated against strong acid or strong base solutions with pH readings taken at frequent
Free PH Acid dissociation constant Buffer solution
The developing chamber is a critical technique of TLC for it becomes the principal reference to recording the Rf values of the solutions. 5ml of Ethyl Acetate Acid was poured inside a 250ml beaker. As stated in the introduction‚ CH3COOCH2CH3 was the developing solvent in our chamber for this solution. The beaker was then covered with a piece a foil and places under a hood. This was done so that the chamber
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Lab 3: Solubility of Organic Compounds Objectives: Understanding the relative solubility of organic compounds in various solvents. Exploration of the effect of polar groups on a nonpolar hydrocarbon skeleton. Introduction: The solubility of a solute (a dissolved substance) in a solvent (the dissolving medium) is the most important chemical principle underlying three major techniques you will study in the organic chemistry laboratory: crystallization‚ extraction‚ and chromatography.
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vinegar compared to the standard solution which Trading Standard provides. What is a Vinegar? Vinegar is a versatile liquid that is created from fermentation of ethanol‚ this is done by when yeast or any type of bacteria. These converts sugar in ethyl alcohol and carbon dioxide. Fermentation begins after the glucose enters the cell. The glucose is broken down into pyruvic acid and is converted into CO₂‚ ethanol and energy for the cell. It also contains acetic acid‚ this acid is the key ingredient
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of sodium ions and bicarbonate ions. These two solutions mixed together produce two separate reactions. The first is an acid-base reaction producing carbonic acid (H2CO3) and sodium acetate(CH₃COONa). The second is a decomposition reaction of carbonic acid to produce water (H₂O)‚ carbon dioxide gas (CO₂). Sodium acetate is the sodium salt of acetic acid. The balanced equation for this reaction
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In this experiment‚ we used simple distillation and extraction to do synthesis of 1-bromobutane. The experiment was carried out by mixing 13.3 g of sodium bromide‚ 15 mL of water and 10 mL of n-butyl alcohol in a 100 mL round bottom flask. We cooled the mixture and added 11.5 mL of concentrated sulfuric acid. Then the mixture was heated at reflux with a short condenser for 45 minutes and then we drained out the condenser. We removed the condenser and distillation head was set up to set up the condenser
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