when two aqueous solutions are mixed. 3. Write the chemical equation‚ the ionic equation‚ and the net ionic equation for metathesis reactions. 4. Identify unknown compound‚ experimentally‚ based on solubility‚ temperature‚ and crystallization. Reagents and Media: 1.0 M sodium acetate 1.0 M sodium acid 1.0 M sulfuric acid 1.0 M sodium hydroxide Ice 0.1 M lead nitrate 0.1 M barium chloride 1.0 M cadmium chloride
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Synthesis of Banana Flavor CHEMISTRY 200L EXPT 02 PAGE 01 - 11 Gerome B. Vallejos*‚ Ellis Mika C. Trino‚ Jahn Camille B. Valdez‚ Ariza Yamashita Department of Biological Sciences‚ College of Science Group 11 Corresponding author: gerome_911@yahoo.com Abstract The purpose of this experiment was to synthesize isopentyl acetate via Fischer esterification reaction between acetic anhydride and isoamyl alcohol‚ using concentrated sulfuric acid as a catalyst. This reaction is characterized by the combining
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over from other steps. Every other reagent has a higher melting point‚ so it makes sense that it would be higher if the product wasn’t pure enough. They most likely contaminated the sample during the suction filtration‚ meaning that the crystals didn’t dry long enough. When water was supposed to be added drop – wise to make the solution cloudy‚ the solution was already cloudy‚ so the problem was evident there. Percent yield : See attached sheet Limiting reagent : See attached sheet III.
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anhydride. Acyl esterification is a reaction between acid anhydrides and acyl chlorides. Through this experiment‚ the students that performed it would have learned about reflux‚ extraction‚ washing and drying. The reflux technique is the boiling of the reagents while cooling the vapor escaping from it and having it returned in the flask to prevent evaporation. This guarantees that the temperature in the flask is constant. Extraction‚ washing and drying the resulting chemicals after the reflux technique
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Title: Nitration of Acetanilide Aim : To observe how an Aromatic electrophilic Substitution reaction takes place via the nitration of Acetanilide i.e. how hydrogen on a carbon chain is replaced with a nitro group. Reagents and Chemicals: • Acetanilide (5g) • Glacial acetic acid (5mL) • Concentrated sulphuric acid (10mL &1.5mL) • Concentrated Nitric acid (2.0mL) • Methanol (30-50mL) Modification to experimental procedure: The experimental procedure was conducted
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Lab 3: Bromination of Acetanilide CHEM 2110 Hassan Alsaleh 0525970 Due date :11/02/2015 Q1: To find the limiting reagent we need to find the number of moles of acetanilide‚ and the number of moles of Bromine. Mass of Acetanilide used = 0.67g Molar mass of Acetanilide = 135.16g/mol[1] Number of moles of Acetanilide = (0.67g) / (135.16g/mol) = 0‚005 mols Volume of Bromine = 0.25ml Density of Bromine = 3.103 g/ml[2] Mass of Bromine = (0.25ml) X (3.103g/ml) = 0.78g Molar mass of Bromine
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two reactants undergo a double displacement (precipitation) reaction to produce a precipitate. The limiting reactant‚ theoretical‚ actual and percent yields will be determined and reported. Objective: To determine the limiting reactant‚ theoretical yield‚ actual yield‚ and percent yield in a chemical reaction between solutions of potassium iodide and lead (II) nitrate. Introduction: Stoichiometry‚ mass‚ and mole relationships have been important throughout the history of chemistry. The simplest
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5.04H: Gas Stoichiometry Lab Worksheet Name: _________________________ Data and Observations: Present all relevant data in a data table below. Include an observations section for any observations that you made during the lab. (5 points) |Data Table | |Mass of magnesium strip (grams) | | |Volume of gas collected (mL) | | |Barometric pressure (atm)
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6e- 7e- ^ the 13 on C is mass number. = # protons + # neutrons. 3. N2 + 2 O2 + Cl2 -> 2 NO2 Start with 6 mol N2‚ 4 mol O2‚ 4 mol Cl2‚ Find limiting reagent and amounts remaining of excess reactants N2 + 2 O2 + Cl 2 6 mol 4 mol 4 mol start Max yield x (2mol No‚Cl/ 1 mol N2) Of No2Cl = 12 mol 4 mol 8 mol O2 is the limiting reagent. 4 mol of NO2Cl (4 mol NO2Cl) (1 mol N2 / 2mol No2Cl) = 2 mol N2 consumed 6 mol N2 – 2 mol N2 = 4 mol N2 left ^at start ^ used up (4 mol NO2Cl)
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The amount of methyl benzoate obtained was 2.972 grams‚ and 3.690 grams of methyl m- nitrobenzoate product was also acquired. The limiting reagent for this electrophilic aromatic substitution reaction is methyl benzoate. It yields the least amount of methyl nitrobenzoate in this reaction‚ and therefore is the limiting reagent. The electrophilic aromatic substitution reaction between methyl benzoate and a nitrating solution of sulfuric and nitric acids was successful and yielded
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