the color change occurred so there was more solute going into the mix than there should have been. Also at one point there was the mistake in part B of using KHP and HCl together instead of the NaOH so that mistake skewed results just a little. Conclusion: For this experiment‚ it was essential to make sure the correct solutes were being used properly‚ as we found out‚ it would not produce a color change if the wrong things were paired. Research
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CALORIMETRY INTRODUCTION Calorimetry is used to determine the heat released or absorbed in a chemical reaction (1).Trustees of darmouth college states that (1) is used to determine the heat released or absorbed in a chemical reaction. To determine the heat released or absorbed in a chemical reaction an instrument called calorimeter is used. A calorimeter is an instrument used for measuring the heat of a reaction during a well defined process (2). Brucat states that (2) a calorimeter is an instrument
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Chem 17 ▪ General Chemistry Laboratory II Experiment 1 Calorimetry INTRODUCTION Chemical reactions are usually accompanied by the evolution (exothermic reaction) or absorption (endothermic reaction) of heat energy. When measured at constant pressure‚ the heat evolved (qp < 0) or absorbed (qp > 0) is equal to the enthalpy change‚ symbolized by ΔH. ΔH is positive for an endothermic process and negative for an exothermic one. If H f is the enthalpy of the final state and Hi of the initial state
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Experiment: Calorimetry Laboratory Experiment – Heat of Solution Aim: The aim was to use calorimetric measurements to calculate the molar heat of solution of NaOH and NH4NO3. Method: 1. 50g of water was poured into a clean polystyrene calorimeter (Styrofoam cup) and the initial temperature was measured. 2. A teaspoon of 2g of the selected salt was measured and added into the water. 3. The solution was stirred and the final temperature was measured when the solution stabilised and the results
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CALORIMETRY Abstract: During the experiment‚ the group were able to perform the following objectives; to compute the heat capacity of a Styrofoam-cup calorimeter‚ and also to compute the heat of neutralization of 1.0 M hydrochloric acid and 1.0 M sodium hydroxide‚ the heat of dilution of concentrated sulfuric acid‚ and the heat of solution of solid ammonium chloride The sixth experiment was named "Calorimetry" wherein it is the measurement of how much heat is gained or released by a system
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Experiment 1: Calorimetry INTRODUCTION In the calibration of the calorimeter‚ the net ionic equation used is H+(aq) + OH-(aq) H2O(l). The reaction released heat and is said to be exothermic. HCl is the limiting reactant of the reaction and o.oo5 moles of it was used. The heat generated by the reaction is 55.8 kJ. The sign of T of the reaction used for calibration is opposite to that of H. In the determination of heats of reaction‚ the reaction of 15 mL 1 M CuSO4 + 0.05 g Zn produced a
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5. Thoreau uses a metaphor at the end of the third paragraph you read: “never dreaming the while that he lives in the dark unfathomed mammoth cave of this world‚ and has but the rudiment of an eye himself.” What comparison is he making? 6. In the fourth and fifth paragraphs you read‚ what are Thoreau’s views of the news and the mail? How might Thoreau have seen today’s society that is so obsessed with social media and 24 hours a day news channels? He could not live in the world we live
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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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SCH 4UH – 01…you get the idea?} What is the due date for the lab? _____ {not when you handed it in} Beneath this stuff goes the ABSTRACT… that is where you summarize in a concise paragraph the purpose of the report‚ data presented‚ and major conclusions in about 100 - 200 words. For example… This experiment attempts to measure the density of aluminum‚ copper‚
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