To begin the experiment‚ the unknown needs to be determined as an acid or a base by using litmus paper or a pH strip. For the rest of the experiment‚ if the substance is being handled‚ gloves and goggles must be worn. Use a clean and dry Erlenmeyer flask and weigh it. Then‚ some of the unknown will be measured and poured into the flask. Also way the flask and the unknown. Add distilled water and phenol saline to the flask. Set that aside to prepare the biuret. Choose the substance that will be used
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1. Start off by weighing two paracetamol tablets using some accurate scales. Record the mass down (1.15g). This had to be as accurate and precise as we could get it so we had the correct weight to start the experiment. Without this then the results we found at the end would not be accurate. A problem that could be faced with this is that the scales may not have been fully set to zero. Also it takes time for it to fully reach its weight on the reading so you may move them too quick before the right
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NH3 H2O - NH4OH can be a very useful to the society because by keeping an eye out for this synthesis reaction‚ chemical technicians are able to identify ammonium hydroxide in water accessed by people and prevent people from being in contact with toxic water. Ammonia takes the form of gas at room temperature. It is a colourless gas with an irritating odour. Ammonias melting point is at -77 degrees Celsius and its boiling point is at -33.35 degrees Celsius. This covalent compound is corrosive to
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CALORIMETRY KATHLEEN IVY B. MENDOZA DEPARTMENT OF CHEMICAL ENGINEERING‚ COLLEGE OF ENGINEERING UNIVERSITY OF THE PHILIPPINES DILIMAN‚ QUEZON CITY DATE PERFORMED: JANUARY 30‚ 2015 INSTRUCTOR’S NAME: JACOB NOEL M. INGUITO INTRODUCTION Calorimetry‚ derived from the Latin calor meaning heat‚ and the Greek metry meaning to measure‚ is the science of measuring the amount of heat‚ q.1 The amount of heat is absorbed (endothermic where qrxn >0) or released (exothermic where qrxn <0) by the system with
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CALORIMETRY K.M.J. PECO1 1INSTITUTE OF CHEMISTRY‚ COLLEGE OF SCIENCE UNIVERSITY OF THE PHILIPPINES DILIMAN‚ QUEZON CITY‚ PHILIPPINES DATE PERFORMED: JUNE 21‚ 2013 INSTRUCTOR’S NAME: LISA MARIE S. RAMIREZ INTRODUCTION In all chemical 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
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Chemical Equilibrium J.R. Chua2 and I.G. Mejarito2 1Department of Mining Engineering‚ College of Mining Metallurgical and Materials Engineering University of the Philippines‚ Diliman‚ Quezon City‚ Philippines 2Department of Molecular Biology & Biotechnology‚ College of Science Date Performed: April 22‚ 2013 Instructor: Julius Victorius A. Saluria Discussion The laws of chemical equilibrium define the direction in which a chemical reaction will proceed‚ as well as the quantities of
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Calorimetry Equations Monday‚ October 28‚ 2013 12:00 PM TOOL BOX q=mc∆T Water sp. Heat Calorimetry : the measurement of energy (calorie) Calorimeter : tool used to measure energy by Measuring the change in temperature Equation : q=mc∆T What is the difference between Calorimetry and Calorimeter? Quantity of Energy (Cal.) Mass (g) Specific heat (given) (Cal/g) Change in temperature (℃ ) (End-short) What is the dance that we learned
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Determination of the Resonance Stabilization Energy of Benzene Using Bomb Calorimetry Kaitlynn‚ Jesse ‚ Belinda Truman State University Abstract The resonance stabilization energy of benzene is investigated by the combustion of cyclododecatriene. The heat of combustion for cyclododecatriene was determined using bomb calorimetry and used to solve for the stabilization energy of benzene. The bond stabilization energy of benzene is found to be 167.6 ± 388
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ANALYSIS On the first part of the experiment which is the determination of specific heat of metals. The obtained value of experimental specific heat of metal of aluminum and copper are 0.2152 calg-℃ and 0.0958 cal g-℃ ‚ respectively. It is a must to work faster in performing this experiment because working in an air-conditioned room greatly affects the result of the temperature. For the temperature values‚ the final temperature of mixture should not increase more than 1 ℃ compare
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University of Nebraska at Omaha Bomb Calorimetry Physical Chemistry 3354 Enthalpy of Combustion: 1‚2-diphenylethane January 6‚ 2014 Author: Jon D. Paul Signature Professor: Dr. Edmund Tisko Date Abstract Experimentation involving constant volume calorimetry produces the heat of reaction for many substances. When choosing adiabatic conditions we are allowed to focus on the reaction system while neglecting everything else. The reactions that are studied should proceed relatively
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