For the reaction, 2Cr2++Cl(g)---->2Cr3++2Cl, E cell is 1.78 V.Calulate the standard free energy change.
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Electrochemistry
What is the standard cell potential (E cell) of the reaction below deltaG= -79.kJ/mol?
2Cr2+(aq) + 2H+(aq) ---------2Cr3+(aq) + H2(g)
Voltaic cell that uses the reaction
T13+(aq) + 2Cr2+(aq)→T1+(aq) + 2Cr3+(aq), has a measured standard cell potential of +1.19 V.
(a) Write the two half-cell reactions. (b) By using data from Appendix E, determine E°red for the reduction of T13+(aq) to T1+(aq).
(c) Sketch the voltaic cell, label the anode and cathode, and indicate the direction of electron flow.
Calculate free energy from cell potential.
Use standard reduction potentials to calculate the standard free energy change in kJ for the following reaction:
3Hg2+(aq) + 2Cr(s)--->3Hg(l) + 2Cr3+(aq)
Answer: ________ kJ