Kami Export - Aditi Singh - Expt 10 - Gibbs Free Energy of a Dissolution Reaction_2019.pdf

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7Suggested Setup for Lab Notebook (All lab data goes in the notebook; do not record lab data here)Complete the table.Data point 1 represents the lowest temperature value.DataPoint[B4O5(OH)42–](mol/L)T, K1/T (K-1)KsplnKsp12345Show sample calculation for Kspand lnKspusing data point 1 (see equation 6)Use Excel to plot a graph of lnKsp(y-axis)vs.1/T (x-axis).Use the “Add Trendline” feature to draw a straight linethrough the five data points.The equation of the straight line should be shown on the graph along with the valueof R2.(If one of the data points does not lie on the line, remove it and re-do the straight line, the equation, andR2.)Equation of the straight line__________________Enthalpy of dissolution,DHo__________________kJ/molShow calculation:Entropy of dissolution,DSo__________________J/mol.KShow calculation:Gibbs free energy of dissolution,DGo__________________kJ/mol(at 25oC)Show calculation:
8Experiment 9 Post-Lab Report Questions (to be submitted to lab instructor at thebeginning of the next lab period)Your name:Instructor:

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