Explain the principle or theory of Differential Thermal Analysis (DTA) | Analytical Chemistry. скачать в хорошем качестве

Explain the principle or theory of Differential Thermal Analysis (DTA) | Analytical Chemistry.

Download PDF notes at http://edmerls.com/explain-the-princi... In differential thermal analysis (DTA), the temperature difference between the test sample and reference material (non-reactive general alumina) is followed, while the two substances are subjected to identical and controlled heating or cooling. The thermal plot is temperature difference Vs the temperature of reference material. If the sample does not undergo any physical or chemical change. Then there will be no temperature difference between sample and reference. But a temperature difference will definitely occur if the sample undergoes any change. For instance in an endothermic change such as melting or dehydration of the sample, the temperature of the sample will be lower than that of reference. On completion of the process, the sample will again show zero difference of temperature as compared with the reference. On the other hand, if an exothermic reaction takes place, the sample temperature will be higher than that of reference material. If we plot a graph of the difference of temp. Vs temp. of reference. The graph obtained is in the form of peaks. For endothermic peak will be in the downward and for exothermic, the peak is In an upward direction. The shape, size of the peaks gives a lot, of information about the nature of the test sample. The endothermic curve is for physical change while exothermic is for chemical change. The oxidation reaction gives exothermic curve, The melting or fusion are endothermic. Peak areas and peak heights are used for quantitative measurements. Analytical Reasoning    • Solve Problems Related To Ages With These ...   English Grammar    • Making Sense With Tense #1 - English Grammar   Interview Skills    • Questions You May Be Asked During an Inter...   Managerial Economics    • MCQ #1 of Managerial Economics   Royalty Free Stock Footage    • Flowers - Royalty free footage   Chemical Thermodynamics - Physical Chemistry    • State and Explain first law of thermodynam...   Ionic Equilibria - Physical Chemistry    • Derive expression for Ostwald’s Dilution law.   Electrochemistry - Physical Chemistry    • What are different types of Reversible Ele...   Solid State - Physical Chemistry    • Explain the following terms | Solid State ...   Gaseous State - Physical Chemistry    • Postulates of Kinetic Molecular Theory of ...   Colloidal States - Physical Chemistry    • What is Colloidal Solution? | Colloidal St...   Stereochemistry - Organic Chemistry    • Explain Configuration and Conformation | S...   Nanomaterials - Engineering Chemistry    • Compare top down with bottom up Processes ...   Water and Its Treatment - Engineering Chemistry    • Explain why hard water gives out a curd li...   Electrochemistry - Engineering Chemistry    • Distinguish between metallic and electroly...   Environmental Studies    • MCQ on Environmental Studies Part 8   Optics - Applied Physics    • What are cartesian sign conventions for sp...   For Details Visit http://cepekmedia.co.nf http://cepek.hol.es/ http://edmerls.66Ghz.com/ http://edmerls.tk/