Bomb Calorimetry-Lab - LAB REPORT COVER PAGE Department of...

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LAB REPORT COVER PAGEDepartment of Chemical EngineeringRyerson UniversityCourse Number -CHE214Course Title-Thermodynamics IISemester & YearWinter 2016Instructors-Dr. R. DhibLab No.2(Experiment 4- Effect of Temperature on the Heat of Combustion)Experiment Title:Determine the heat of combustion using a bomb calorimeter carrying out acombustion reaction.Date the experiment was performed -March 13, 2017Submission DateMarch 20, 2017Due DateMarch 20, 2017Student ID500733024Student Name:Tatiana Ramirez
Purpose:The purpose of this experiment is to understand and study the use of a bomb calorimeter and perform acombustion reaction. From this process, the temperature difference can be obtained and used tocalculate the heat of combustion of an unknown pure compound.Theory:Calorimetry is the branch of thermodynamics that deals with the measurements of the change in energyof a system, which occurs during the process of a chemical or physical change(2). A device calledacalorimeteris used to measure this change in energy. Several types of calorimeters exist, but for thisexperiment a bomb calorimeter was used. Bomb calorimeters differ from other devices mainly becauseof its ability for precision in measuring the heat exchange but also because of its capability of measuringreactions such as combustion, which involve gases. The bomb calorimetry is a stainless-steel containerwhich is placed inside a bucket of water inside the calorimeter with a thermometer. Following, a smallfuse wire in contact with the chemical compound is ignited. And, the change in temperature of thewater is used to measure the heat produced. Water-filled jacket in the calorimetry system prevents theheat exchange between the system and surroundings(4).Since the combustion reaction occurs inside an insulated calorimeter, the volume does not change.Constant volume thus implies that, the change in internal energy is being measure and that the initialand final temperatures are not the same. Lastly, this implies that the process is adiabatic so heattransfer (Q) is 0(4).On the other hand, work done on the system by the surroundings can be considerednegligible and thus the 1st law of thermodynamics mathematically states:?=𝑞+?

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Term
Winter
Professor
Ramdhane Dhib

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