Purpose The purpose of this experiment is to determine the rate constants‚ k1‚ for the methyl acetate hydrolysis reaction at 25 °C and 35 °C‚ as well as the overall activation energy of the reaction. Methods Methyl acetate was placed in an HCl solution‚ in which it reacts with water to form acetic acid over time. At each time interval‚ an aliquot of the mixture was removed for titration against NaOH to determine the concentration of the acetic acid produced. From the amount of acetic acid produced
Premium Ester Ethyl acetate Acetic acid
Michael Ames Ms. Martin IPS Per. 1 11-3-09 Sludge Lab Report A few weeks ago‚ I got a container full of “sludge”. I was asked to separate it into its four components and identify each one to help me better understand how to separate mixtures ad identify substances. My original sludge had a liquid on top and solid(s) on the bottom. The liquid was clear‚ and most of the solid was tan. There was a small layer of blackish/brownish particles in the middle of the tan solid. There were small yellow
Premium Chemistry Chemical substance Chemical compound
Dehydration refers to a chemical reaction where the reactant loses a water molecule. In the presence of a strong acid like 85% phosphoric acid‚ an alcohol like-2-methylcyclohexanol can be dehydrated to form an alkene. In this experiment‚ alcohol was dehydrated by E1 elimination‚ in order to synthesize cyclohexene. First‚ alcohol is protonated by the acid. Second‚ during E1 elimination‚ a carbocation is formed by the removal of an oxonium ion to yield a secondary and a tertiary carbocation. The receiving
Premium Chemistry Acetic acid Sodium hydroxide
The obtained mass of benzocaine and benzoic acid mixture was measured to be 2.075 grams. Following being dried for a week the mass of benzocaine was recorded to be 0.250 grams‚ and benzoic acid was recorded to be 0.600 grams. The melting point range of benzocaine was measured to be 89.5°C-91.5°C‚ while benzoic acid’s melting point range was measured to be 129°C-131.3°C. The percent mass recovered was calculated to be 40.96% for the experiment. Table 1 illustrates the collected information. Starting
Premium Chemistry Oxygen Solvent
Task 2 The extraction and purification of paracetamol from tablets In this experiment‚ I am trying to achieve an extraction of paracetamol from a commercial branded product. To test the purity I will find the melting point of the paracetamol. I will also be comparing my yield of paracetamol to the commercial tablets content of paracetamol as said on the packaging. EQUIPMENT • 2 paracetamol tablets • Propanone • 100cmᶟ conical flask x2 • 25cmᶟ measuring cylinder • Warm water bath • Filter funnel
Premium Chemistry Oxygen Water
Procedure. 1) Accurately weigh approximately 2 g of the mix and dissolve it in 50 mL of diethyl ether. Be sure to dissolve the entire mix since it is not homogeneous. 2) Pour the solution into a separatory funnel. 3) To extract the nicotinamide from the mixture‚ add 5 mL of 5% HCl and shake gently. Draw off the lower aqueous layer into 125 mL Erlenmeyer flask and repeat the extraction with a second portion of HCl. Combine the three extracts and then set this mixture aside. 4) To separate the
Premium Solvent Water Laboratory glassware
3.5.3 X-Ray Diffractometery (XRD). The crystallinities of pure Zolmitriptan‚ excipients and liquisolid system were evaluated by XRD measurement. It has been seen that polymorphic changes of the drug are important factors‚ which may affect the drug dissolution rate and bioavailability(135). The X- ray diffractogram of pure Zolmitriptan Figure (25) exhibited several sharp peaks at different angle (2Ɵ)‚the three strongest angles were 19.2 Ɵ‚ 21.9 Ɵ and 23.8 Ɵ ‚other angles were 12.2 Ɵ‚13.7 Ɵ‚ 14.2
Premium Crystallography Spectroscopy Solvent
The purpose of this experiment was to isolate and purify cholesterol from egg yolks. Two hard boiled egg yolks were twice extracted with diethyl ether and methanol‚ with the filtrate collected via vacuum filtration. Potassium hydroxide pellets were added to the filtrate‚ the ether was distilled off‚ and the mixture was saponified by reflux. The crude cholesterol was isolated through a series of ether extractions and aqueous washes; then the ether was dried with MgSO4 and removed by rotary evaporation
Premium Distillation Egg yolk Alcohol
Methodology A. Synthesis of D-Arabino-Hexulose Phenylosazone In a 50 mL quick-fit round bottom flask with a reflux condenser‚ dissolve 10 g cane sugar in a mixture of 20 mL glacial acetic acid. Boil mixture for 30 minutes. Add the phenylhydrazine solution through the condenser. Remove from the hot plate. Rinse with 5 mL of 1:1 mixture of water and glacial acetic acid to complete the transfer of phenylhydrazine. When a yellow solid emerges‚ swirl the mixture. Wrap a dry cloth around the flask
Premium Ethanol Water Distillation
3/16 Chem 322 Friday Partition Coefficient (Extraction) Lab for Benzoic Acid Reaction Mechanism: Purpose: The purpose of this particular lab was to demonstrate the difference in separation of Benzoic acid in water and Dichloromethane. Also the difference in separation of Benzoic acid in bicarbonate and Dichloromethane. By calculating the partition coefficient for each of these separations‚ it became clear the differences in the separation of the aqueous and organic layers. Observations
Premium Carbon dioxide Solvent Chemistry