Cell reaction is spontaneous whena)EθRed is positiveb)ΔGθis positivec)ΔGθis negatived)EθRed is negative.Correct answer is option 'C'. Can you explain this answer?

Question

Cell reaction is spontaneous whena)E&#952;Red is positiveb)&#916;G&#952;is positivec)&#916;G&#952;is negatived)E&#952;Red is negative.Correct answer is option 'C'. Can you explain this answer?

Answer

A reaction is spontaneous if Gibbs free energy  is negative as well as standard reduction potential is positive

Answer

If Gibb's free energy is negative the rxn will be spontaneous (as Gibb's free energy converts all[100percent] energy into work)

Answer

An electrochemical reaction takes place when the cations and the anions present in the electrolyte solution travel to the respective electrodes and either give up or take up electrons. As the ions travel, they carry a certain charge and in this process, electricity is produced.
But all these processes will only be possible or be spontaneous when the Gibbs Free energy of the medium is negative.

Answer

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b)E = 0
c)E > 0
d)E = ∞
e)E < 0='' />

Answer

For a reaction to be spontaneous the value of Gibbs free energy should be negative

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