It is possible to determine both deltahdegree and deltaSdegree, for live solutio

Question

It is possible to determine both deltahdegree and deltaSdegree, for live solution process from this data One or both of two graphical methods can be used: From the equation: Method 2: Alternatively, rearranging the equation relating k_sp deltaGdegree_sola = deltaHdegree_soln-TdeltaSdegree_soln and deltaGdegree_soln: Using one or both of these graphical methods, determine deltaHdegree_soln (in kJ/mol) and deltaSdegree_soln (in j/(K*mol)) for this salt, (lie sure to play close attention to your units and signs in both your plots and your calculations).

Explanation / Answer

Slope = y2-y1/ x2-x1

(x1,y1) = (330,7.4)

(x2,y2) = (310,7.9)

Slope = -dS = (7.9-7.4)/(310-330) = -0.025kJ/mol

dS = 25J/mol

Also, dG = dH - TdS

So, at 310 K, dG = 7.9kJ/mol = 7900J/mol

7900 = dH - (310 x 25)

dH = 15650 J/mol = 15.65kJ/mol

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