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The acid dissociation constant of the 1,10-phenanthrolium ion (phen) was meeasured at different temperatures using spectroscopic methods. The...

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Chemistry

The acid dissociation constant of the 1,10-phenanthrolium ion(phen) was meeasured at different temperatures using spectroscopicmethods.

The values of pKa measured at 298K and 308K were 4.812 and4.731, respectively.

Part A:Calculate  ΔrGo at 298K.Express your answer in kJ/mol to three significant figures.

Part B:Calculate  ΔrGo at 308K.Express your answer in kJ/mol to three significant figures.​

Part C:Calculate  ΔrHo. Express youranswer in kJ/mol to three significant figures.​

Part D:Calculate  ΔrSo. Express youranswer in J/(K.mol) to three significant figures.​

Part E: Calculate the pKa of the acid at 359K.Express your answer to three significant figures​

Answer & Explanation Solved by verified expert
3.9 Ratings (583 Votes)
We know that pKa log Ka Given pKa 298 K 4812 Ka 298 K 10pKa 104812 15417105 pKa 308 K 4731 Ka 308 K 104731 18578105 A We know that G0    See Answer
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