I only need part B. t Cell Potential and Free Energy Free-energy change, AGO, is
ID: 873033 • Letter: I
Question
I only need part B.
t Cell Potential and Free Energy Free-energy change, AGO, is related to cell potential, Eo, by the equation AG nFE where n is the number of moles of electrons transferred and F 96,500 C/(mol e is the Faraday constant. When E is measured in volts, AG must be in joules since 1 J 1 C. V Part A Calculate the standard free-energy change at 25 o C for the following reaction: Mg(s) +Fe2+ (aq) Mg 2+. (aq) +Fe(s) Express your answer to three significant figures and include the appropriate units. AGO -3.71x105 J Submit Hints My Answers Give Up Review Part Correct Since Eo is positive and AGO is negative, this reaction is spontaneous under standard conditions significant Figures Feedback: Your answer -3.72.105 J was either rounded differently or used a different number of sig figures than required for this part. Part B Calculate the standard cell potential at 25 C for the reaction x(s) 2Y+(aq)- 2+ (aq) 2Y(s) where AHO -757kJ and AS -251J/K Express your answer to three significant figures and include the appropriate units.Explanation / Answer
The Gibbs energy is related to the entropy,