Calorimeter Lab - Micaela A. Jaramillo CHEM 121 Section 2...

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Micaela A. JaramilloCHEM 121Section 2October 18, 2016Partners: Morelia Cuevas and Arzoo RishadCalorimetry and ThermochemistryThe Specific Heat of Lead was measured, which was found to be .0869cal/g°C. A calorimetry was used tofind the enthalpy changes of two reactions, the hydration of MgSO4· 7H2O and the hydration of MgSO4.The enthalpy change of MgSO4was found to be 2kcal/mol while the hydration of MgSO4had an enthalpychange of 11.05kcal/mol.IntroductionBy using a calorimeter, the enthalpy changes of chemical reactions can be found.This strategy can beused to find the enthalpy changes of reactions in cases that would be difficult to perform in a lab experi-ment.Experimental Data50.02g Pb ; small grey/black orbs, metallic50g Room Temperature ; 22°CBoiling Point: 96°CTemp of Water 28°CMgSO4· 7H2O — 12.30g (large clear crystals)MgSO4— 6.0g (fine white powder)MgSO4· 7H2O- Room Temp of Water — 24°C- Final Temp of Water — 22°CMgSO4- Room Temp of Water - 22°C- Final Temp of Water - 33°CData Analysis

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Term
Spring
Professor
Dr. chang

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