Lab09 - Amanda Sesselmann, Ben Frazee, Joe Fox...

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Amanda Sesselmann, Ben Frazee, Joe Fox Division/Section: 2301 3/26/07 Thermodynamics and Equilibrium Objective: To determine the values of ΔH, ΔS, ΔG for a system in chemical equilibrium by using the titration method. Data: Test Tube Temperature (C) Start Value (mL) End Value (mL) Change mL Temp (K) 1 44.8 0 24.86 24.86 317.8 2 43.9 24.86 48.3 23.44 316.9 3 34.9 0 24.95 24.95 307.9 4 34 24.95 48.19 23.24 307 5 25.8 0 20.14 20.14 298.8 6 25.2 20.14 39.18 19.04 298.2 7 14.8 0 11.01 11.01 287.8 8 15.9 11.01 20.74 9.73 288.9 9 5.3 20.74 26.36 5.62 278.3 10 6.5 34 39.24 5.24 279.5 The original Boron solution used 30.0065 grams of Boron and 100 mL of water. Data Analysis: K sp Values Sample Calculation Test Tube Concentration (M) Ksp 1 1.000 4.000 2 0.943 3.357 3 1.004 4.048 4 0.935 3.271 5 0.810 2.129 6 0.766 1.799 7 0.443 0.325 8 0.432 0.322 9 0.226 0.043 10 0.211 0.038
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Standard Enthalpy and Entropy Changes Standard Enthalpy and Entropy y = -10602x + 35.435 R 2 = 0.8872 -4 -3 -2 -1 0 1 2 3 0.0031 0.0032 0.0032 0.0033 0.0033 0.0034 0.0034 0.0035 0.0035 0.0036 0.0036 0.0037
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Lab09 - Amanda Sesselmann, Ben Frazee, Joe Fox...

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