ΔG° and E° can be said to measure the same thing, and are convertible by the equation
ΔG° = −nFE⁰cell
where n is the total number of moles of electrons being
transferred, and F is the Faraday constant
9.64853415 ✕ 104 C/mol. The free energy (ΔG°)
of a spontaneous reaction is always negative.
For each of the electrochemical cells below, calculate the free
energy of the system and state whether the reaction is spontaneous
or non-spontaneous as written based on the cathode and anode
assignment given.
(a) The cathode is Ni(II) and the anode is Cd(II).
free energy--> | kJ |
(b) The cathode is Mn(II) and the anode is Ti(III).
free energy--> | kJ |
(c) The cathode is Au(III) and the anode is Ag(I).
free energy --> | kJ |
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