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v Describe what quantity is measured and how the measurement is performed for each of the following techniques: (a) TGA, (b) DTA, (c) DSC,

v Describe what quantity is measured and how the measurement is performed for each of the following techniques: (a) TGA, (b) DTA, (c) DSC,

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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k Assignment Vou * Describe what quantity is measured and how the measurement is performed for each of the following techniques: (a) TGA, (b) DTA, (c) DSC, V A 0.5927-g sample was dissolved, and the Ca2" and Ba2t ions present were precipitated as BaC,O, „H,O and CaC,O, H,O. The oxalates were then heated in a thermogravimetric apparatus leaving a residue that weighed 0.5127 g in the range of 320°C-400°C and 0.4362 g in the range of 580°C-620°C. Calculate the percentage Ca and percentage Ba in the sample. v The table summarizes some data about three iron(III) II Mehedi Molecular Melting Point, "C M Compound Mass chlorides. FeCl, 6H,0 FeCl, H,0 FeCl, 270 37 Moniruzza. Sketch the thermogravimetric curve anticipated when a 25.0-mg sample of FeCl,.6H,0 is heated from 0°C to 400°C. 207 56 162 306 V Why are the applications of TGA more limited than those for DSC? v Why does the glass transition for a polymer yield no exothermic or endothermic peak? v Describe any one thermal analysis technique other then the described ome in this lectures. You can try to invent a new technique. But it should be therpnal property depended. * Mehedthlasangnment is for roll numbers ends with 1, 5 and 7s. 38 others
Transcribed Image Text:k Assignment Vou * Describe what quantity is measured and how the measurement is performed for each of the following techniques: (a) TGA, (b) DTA, (c) DSC, V A 0.5927-g sample was dissolved, and the Ca2" and Ba2t ions present were precipitated as BaC,O, „H,O and CaC,O, H,O. The oxalates were then heated in a thermogravimetric apparatus leaving a residue that weighed 0.5127 g in the range of 320°C-400°C and 0.4362 g in the range of 580°C-620°C. Calculate the percentage Ca and percentage Ba in the sample. v The table summarizes some data about three iron(III) II Mehedi Molecular Melting Point, "C M Compound Mass chlorides. FeCl, 6H,0 FeCl, H,0 FeCl, 270 37 Moniruzza. Sketch the thermogravimetric curve anticipated when a 25.0-mg sample of FeCl,.6H,0 is heated from 0°C to 400°C. 207 56 162 306 V Why are the applications of TGA more limited than those for DSC? v Why does the glass transition for a polymer yield no exothermic or endothermic peak? v Describe any one thermal analysis technique other then the described ome in this lectures. You can try to invent a new technique. But it should be therpnal property depended. * Mehedthlasangnment is for roll numbers ends with 1, 5 and 7s. 38 others
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