1M #4 - 2-15-06Chem 1M Section 01HExperiment...

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Unformatted text preview: 2-15-06Chem 1M Section 01HExperiment #4Determination of Heats of Transition and Reaction and Specific HeatsAbstract:In this experiment, the heat capacity of a basic calorimeter was determined along with the heat of fusion of ice, the specific heat of copper, and the enthalpy change for the reaction Mg +1/2 O2MgO. For the calorimeter, the heat capacity was determined to be 72.7 J/degree C, or 17.37 cal/degree C. The heat of fusion for ice was 7.40 kJ/mol, and the specific heat for copper was determined to be .45 g/J degree C. The enthalpy change for the reaction Mg + 1/2 O2 MgO was found to be -623.84 kJ/mol.Data/Calculations:See pages 23-25.Discussion: In Part I, the heat capacity of the calorimeter was within the expected range of 3-40 cal/degree C, measuring to 17.37 cal/degree C.The experimental value of the heat of fusion of ice was found to be 7.40 kJ/mol, when the literature value is 6.01 kJ/mol. A reason for the differences in these values may have been caused by incorrect measuring of the temperatures, or the ice not completely...
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1M #4 - 2-15-06Chem 1M Section 01HExperiment...

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