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Can E("cell")^(@) or Delta(r)G^(@) for c...

Can `E_("cell")^(@)` or `Delta_(r)G^(@)` for cell reaction ever be equal to zero?

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No, otheriwse the reaction become non-feasible
The reaction is feasible only at `E_("cell")^(@)=` positive or `Delta_(r)G^(@)`=negative.
when `E^(@)=Delta_(r)G^(@)`=0 the reaction reaches at equilibrium.
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NCERT EXEMPLAR-ELECTROCHEMISTRY-Electrochemistry
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  4. Under what condition is E("cell")^(@)=0 or Delta(r)G=0?

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