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Svetllana [295]
2 years ago
13

PLEASEEE HELPPPP....PLEASEEEE

Chemistry
2 answers:
julia-pushkina [17]2 years ago
5 0

Answer: Choice B is correct. \Delta G=-89kJ and E^0_c_e_l_l=+0.46V

Explanation: \Delta G stands for Gibbs free energy equation. A reaction is spontaneous if \Delta G is negative and the reaction non spontaneous if \Delta G is positive.

For a cell, \Delta G is calculated from the cell potential using the equation:

\Delta G=-nFE^0_c_e_l_l

where, n is the moles of electrons transferred in a balanced equation, F is the faraday constant and E^0_c_e_l_l is standard cell potential.

From the above equation, \Delta G could only be negative if E^0_c_e_l_l is positive as the equation has negative sign.

So, the only correct choice is the one for which E^0_c_e_l_l is positive and \Delta G is negative.

Hence. choice B is correct.

Kobotan [32]2 years ago
4 0
For a reaction to be spontaneous, ΔG has to be negative and E° cell is positive. 

the answer is B
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