Q. If the E°cell for a given reaction has a negative value, then which of the following gives the correct relationships for the values of ΔG° and Keq?
A) ΔG° > 0; Keq < 1
B) ΔG° > 0; Keq > 1
C) ΔG° < 0; Keq > 1
D) ΔG° < 0; Keq < 1
Explanation
[Solution from source] ΔG° = −nFE°cell, so a negative E°cell makes ΔG° positive. Since ΔG° = −RT ln K, a positive ΔG° means ln K < 0, i.e. K < 1: the reaction is non-spontaneous as written. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.