JamesonB_Exp 9

JamesonB_Exp 9 - I. Date Performed: 3/24/11 Date Submitted:...

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I. Calorimetry Exp. 9 Date Performed: 3/24/11 Name: Breanna Jameson Date Submitted: 3/31/11 Chemistry 1045L-35 Tong Chen II. Purpose This experiment gives purpose to needing to know concepts of thermodynamics and topics such as calorimetry and Hess’s Law. The purpose of this experiment is to determine the enthalpy of a reaction. We will use a constant pressure calorimeter and measuring the heat reaction of the two parts of this experiment (one with magnesium and hydrochloric acid and the other with magnesium oxide and hydrochloric acid), we will be able to determine the ∆ H r X n for our target reaction.
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III. Procedure No changes. Dillon, Stephanie. “Calorimetry.” CHM1045L Online Manual . Fall 2006. 24 March 2011. < http://www.chem.fsu,edu/chemlab/chm1045lmanual/density/index.html >. IV. Data Part A Part A Calculations : T f D T HW D T CW q HW for hot water (use q HW = m c D T HW q CW for cold water (use q CW = m c D q Cal for the cup (use |q HW | = |q CW |+ q Cal , solve for q Cal ) __322 kJ (run 1) & 218 kJ (run 2)_
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Ccup for the cup (use q Cal = C Cup D Which D T should be used? The DT of the hot water because this is an exothermic reaction.
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This document was uploaded on 11/02/2011 for the course CHEM CHM 1045L at FSU.

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JamesonB_Exp 9 - I. Date Performed: 3/24/11 Date Submitted:...

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