Identify the correct statement for change of Gibbs energy for a system `(DeltaG_(system))` at constant temperature and pressure:

Options

A. if `DeltaG_(system)=0` , the system is still moving in a particular direction
B. if `DeltaG_(system)=-ve` , the process is not spontaneous
C. if `DeltaG_(system)=+ve` , the process is spontaneous
D. if `DeltaG_(system)=0` , the sytem has attained equilibrium

Answer

C

Explanation

`DeltaG_(system)=-ve` , the system is sponteneous, `DeltaG_(system)=0` , the system has attained equilibrim `DeltaG=+ve` , the system is non-spontaneous.