electrochemical cells and thermodynamics am Asiauthaos Date 19-s-17 k 1-24 REPOR

Question

electrochemical cells and thermodynamics am Asiauthaos Date 19-s-17 k 1-24 REPORT SHEET EXPERIMENT Electrochemical Cells 17 and Thermodynamics Shorthand cell desagnarion Temperature(C) Ecell (measured) &G; (calculated) Ker (calculated) 2 Snlsn Show calculagions for A and Kaq for an exemplary pair. For Po| Pb Sn2Sn AG-FECe Halfcell equation E half cell (calculated) 2.s 3. Effect of Temperature on Cell Potential Cell designation: E (measured TemperatureC) Temperature (K) AG (calculated) C393K AS determined from the slope of a plot of AG versus T AH calculated at 298 K (show calculations) 217 Copyright © 2012 Pearson Education, Inc.

Explanation / Answer

Your values for delta G are

96.456, 94.526, 86.810, 88.739, 88.739 for the respective temperates.

Delta S from the slope comes out to be 0.163

The value of delta H at 298K from the graph is 89.8

Putting it in the equation

Delta H= delta G + Tdelta S

= 89.8+ (298)0.163= 138.374 Kj/mol

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