5_60_lecture7

5_60_lecture7 - MIT OpenCourseWare http://ocw.mit.edu 5.60...

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Unformatted text preview: MIT OpenCourseWare http://ocw.mit.edu 5.60 Thermodynamics & Kinetics Spring 2008 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms . ______________________________________________________ 5.60 Spring 2008 Lecture #7 page 1 Calorimetry The objective is to measure isothermal H rx T 1 Reactants ( T 1 ) = Products ( T 1 ) ( ) constant p Constant pressure (for solutions) CALORIMETER reaction thermometer Adiabatic Constant p adiabatic I) H I React. ( T 1 ) + Cal. ( T 1 ) = Prod. ( T 2 ) + Cal. ( T 2 ) constant p II) H II Prod. ( T 2 ) + Cal. ( T 2 ) = Prod. ( T 1 ) + Cal. ( T 1 ) constant p H rx ( T 1 ) React. ( T 1 ) + Cal. ( T 1 ) = Prod. ( T 1 ) + Cal. ( T 1 ) constant p H rx ( T 1 ) = H I + H II (I) Purpose is to measure ( T 2- T 1 ) Adiabatic, const. p q p = 0 H I = (II) Purpose is to measure heat q p needed to take prod. + cal....
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5_60_lecture7 - MIT OpenCourseWare http://ocw.mit.edu 5.60...

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