and Mechanism(s): Reaction: Mechanism: Table of Reactants and Products: Compound Formula weight Volume used (mL) Weight used (g) Moles used Moles required Other data t-Pentyl alcohol 88.15 g 22.00 mL --- 00.20 moles 1 Density: 0.81 g/mL HCl 36.46 g 50.00 mL --- 00.61 moles 1 Density: 1.18 g/mL t-Pentyl chloride 106.59 g 17.00 mL --- 00.14 moles 1 Density: 0.86 g/mL Limiting Reactant Calculations: Theoretical
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3CO2 79. ■ We burn 12.50 L of ammonia in 20.00 L of oxygen at 500.°C. What volume of nitric oxide‚ NO‚ gas can form? What volume of steam‚ H2O(g)‚ is formed? Assume that all gases are at the same temperature and pressure‚ and that the limiting reactant is used up. 4NH3 (g) + 5O2 (g) --> 4NO(g) + 6H2O(g) 107. A particular tank can safely hold gas up to a pressure of 44.3 atm. When the tank contains 38.1 g of N2
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processes‚ heat is either absorbed or released by the chemical system. It can be observed that when sodium hydroxide is reacted with hydrochloric acid‚ the container containing the chemical reaction becomes warmer compared to when only one of the reactants is in the container. This simple observation can lead to the conclusion that heat is absorbed by the system. The question is‚ how much heat does the chemical system absorb from the surrounding and how is it measured? The heat of a reaction can be
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Benzoin was produced by reacting 2 mols of benzaldehyde with the catalyst thiamine to form a new C-C bond. A total of 2.626 grams were recovered. There was a 33% recovery of benzoin. The low percent recovery could be due to the purity of the limiting reactant‚ benzaldehyde. Upon filtration‚ the mother liquid appeared oily making it more likely that the low recovery was due to the solution ‘oiling out.’ This could be avoided in the future by maintaining the temperature of the solution below the melting
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Actual: Melting pt (or bp) 81-83 C N/A Literature: 312-315 C N/A Experimental: Percent Yield Calculation: Limiting Reagent: 1 mg= .001 g‚ 100 mg= .1 g vanillin Moles vanillin = .1g/152.15 g/mol= 6.57x10^-4 moles Density H2O2= 1.45 g/mL Mass H2O2= 1.45 g/mL x .75mL = 1.088g Moles H2O2= 1.088g/34.015 g/mol =.032 moles Limiting reagent = Vanillin Theoretical Yield: 1 mol Divanillin= 2 moles Vanillin Moles divanillin= .5 mol vanillin= 6.57x10^-4 mol/ 2 = 3.29x
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states are molecular species of finite lifetime whose properties can be probed through free radical reactions. C) In an endothermic reaction‚ the transition state is closer to the reactants in structure. D) The structure of the transition state in an organic reaction is always modeled on the structure of the reactants leading to that transition state. E) In an exothermic reaction‚ the transition state is closer in energy to the products. 6) In the first propagation step of the free radical chlorination
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Chem Final Exam Combination Combination reactions‚ also known as synthesis reactions‚ involve the combination of two or more substances into a single new substance: A + B ---> AB Many metal oxides‚ for example‚ absorb carbon dioxide (CO2) from the air to form carbonates: CaO(s) + CO2(g) ---> CaCO3(s) Decomposition Decomposition reactions represent the reverse of the combination process in that one substance breaks down into two or more substances: AB ---> A + B Water‚ or H2O‚ for example
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Introduction: The purpose of this lab was to learn how to use salicylic acid to make aspirin. Aspirin is the most widely used over-the-counter drug in the world. The average tablet contains about 325 milligrams of acetylsalicylic acid with an inert binding material such as starch. Aspirin is used to relieve pain‚ reduce inflammation‚ and lower fever. Aspirin originally was derived by boiling the bark of the white willow tree. Although the salicin in willow bark has analgesic properties‚ purified
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final product. Show your limiting reagent and calculate the theoretical yield and determine your percent yield (You need to show all work to get any credit!). Your last step is to get the IR of your product and the IR of the starting material. This is important since it will give you proof that you manufactured the proper product. Your TA will show you how to use this instrument‚ especially for the first time. Analysis of the spectra should show a change from reactant to product. What functional
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Experiment 1: Calorimetry C.L. Mercado institute of chemistry‚ college of science university of the philippines‚ diliman quezon city‚ philippines date performed: November 16‚ 2012 instructor’s name: Irina Diane V. CastaÑo _________________________________________________________________________________________________________________________ introduction Chemical reactions absorb or release heat. One way to measure this is by using a homemade calorimeter. The calorimeter used
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