Purity of Aspirin Objectives - To research‚ using various sources‚ the history of aspirin‚ its use in medicine‚ methods of synthesizing it and of measuring its purity - To compare the % purity of a branded aspirin tablet with a generic aspirin tablet - To compare 2 methods of composition analysis of the two types of aspirin Research
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3. mole-mole problem: One disadvantage of burning propane (C3H8) is that carbon dioxide is one of the products. The released CO2 increases the growing concentration of CO2 in the atmosphere. How many moles of carbon dioxide are produced when 10.0 moles of propane are burned in excess oxygen on a gas grill? C3H8 + 5O2 → 3CO2 + 4H2O 4. mole-mass problem: Water decomposes to produce hydrogen gas and oxygen gas. How many grams of water would be required to produce 10.0 moles of
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calculate the number of moles of each reactant. 3. To predict which reactant is in excess. 4. To use drawings to relate microscopic events‚ to write a chemical equation that represent those microscopic events. 5. To learn how to measure the volume of a liquid using a buret. Prelab Questions: 1. Calculate the number of moles in 2.65g of zinc. 2. Calculate the number of moles of hydrochloric acid in 37.5mL of a 3.00M HCl solution. 3. Calculate how many moles of HCl are required
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Solution to Tutorial 4 Given: F = 1000 kg-mole/hr‚ xF = 0.20 (ethanol is MVC) Feed is saturated liquid‚ thus q = 1.0 xD = 0.80‚ xB = 0.02 (maximum); R = 5/3 First‚ plot the equilibrium curve using the VLE data given. Note that you need to convert mole% ethanol into mole fraction. Then‚ apply the McCabe-Thiele method to find the number of theoretical (equilibrium) trays required for the separation. Step 1: Since R and xD are known (5/3‚ and 0.80 respectively)‚ plot the ROL equation - it
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AP Chemistry Lab 2: Analysis of Alum Lab Objective: In this lab we will analyze alum by two techniques in order to verify its identity. The melting point and the mole ratio of hydrated water to anhydrous aluminum potassium sulfate will be determined. Lab Procedure: 1. Use a mortar and pestle to crush alum. 2. Pack the alum in capillary tube‚ and then fasten it to the thermometer. 3. Fasten the thermometer to the ring stand. 4. Immerse the bottom of the
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Abstract Pyrorle-2-aldehyde and 1‚3-diaminopropane react under reflux to form a transition metal ion of Nickel(II)‚ that further more react with nickel acetate to form red crystals through condensation‚ the colour being constituded by the congugated bonds. These series of reactions synthesize the Schiff Base ligand and Nickel(II) complex of the Schiff base ligand. 0.36g of the Schiff base ligand is yielded and 0.1g of the nickel complex is yielded from the 0.36g Schiff base ligand and 0.5g nickel
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experiment was to react salicylic acid with ethanoic anhydride to produce Aspirin. CH3CO)2O + HOC6H4COOH → CH3CO2C6H4CO2H + CH3COOH i Mass: 5g Volume: 7.5 cm3 Mass: 6.52g RMM: 138g/mol RMM: 180g/mol Moles: 5/138 = 0.0362 RMM: 102g/mol Moles: 0.0362 OBSERVATIONS – First‚ Ethanoic acid was added to the salicylic acid which resulted in a cloudy solution. When adding a few drops of concentrated sulfuric acid‚ which acted as a catalyst‚ effervescence transpired and
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quantity of heat released in a reaction depends on the amount of material undergoing reaction. The chemical formulas that appear in a reaction each represent 1 mole (see article on "Mole Concept") of material; for example‚ the symbol CH 4 stands for 1 mole of methane having a mass of 16 grams (0.56 ounces)‚ and the 2 O 2 (g) tells us that 2 moles of oxygen are required. Thermochemistry also depends on the physical state of the reactants and products. For example‚ the heat liberated in equation (1) is
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mass and calculated the amount of mass for both the anhydrous compound and the water. We repeated this experiment twice. Using the formulas‚ [mass of anhydrous compound x (1 mole/ molar mass of anhydrous compound)] and [mass of water x (1 mole/molar mass of hydrate)] we calculated the moles of anhydrous CaSO4 and moles of water eliminated. Using the results from both trials we calculated the average formula. In Part B‚ we heated 3 crucibles (and lids) for 5 minutes and then allowed to cool
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Synthesis of Banana Flavor via Fischer Esterification Patricia Faye R. Agnila‚ Joan Karla M. Alvaran*‚ Micaela Isabel N. Arellano‚ and Denzel Nicho T. Armendares Department of Biological Science‚ College of Science‚ University of Santo Tomas‚ Manila‚ Philippines Abstract This experiment is conducted to exhibit the synthesis of banana
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