A) If \[\Delta {{G}_{system}}=0,\] the system has attained equilibrium
B) If \[\Delta {{G}_{system}}=0,\] the system is still moving in a particular direction
C) If \[\Delta {{G}_{system}}=0,\] the process is not spontaneous
D) If \[\Delta {{G}_{system}}=0,\]the process is spontaneous
Correct Answer: A
Solution :
\[\Delta {{G}_{system}}=-T\Delta {{S}_{Total}}\] [a] If \[\Delta S=0,\] \[\Delta G=0,\] the process is in equilibrium. [b] If \[\Delta S\] is positive, \[\Delta G\] is negative, the process is spontaneous. [c] If \[\Delta S\] is negative, \[\Delta G\] is positive, the direct process is non-spontaneous.
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