question_answer 116)

  Which of the following options will be correct for the stage of half completion of the reaction\[A\underset{{}}{\leftrightarrows}B\]? (a)\[\Delta {{G}^{O-}}=0\]                           (b) \[\Delta {{G}^{O-}}>0\]                          (c) \[\Delta {{G}^{O-}}<0\]                                (d) \[\Delta {{G}^{O-}}=-RT\ln 2\]

Answer:

  (a) In the reaction \[A\underset{{}}{\leftrightarrows}B\] K = 1 if reaction is at halfway mark. \[\therefore \]  \[\Delta {{G}^{o}}=-RT{{\log }_{e}}K\]                 \[=0\]