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{:("column"-1,"Column"-2),((A)(DeltaG("s...

`{:("column"-1,"Column"-2),((A)(DeltaG_("system"))_(T.P) = 0,(p) "Process is in equilibrium"),((B)DeltaS_("system")+DeltaS_("surrounding") gt 0, (q)"Process is nonspontaneous"),((C)DeltaS_("system") +DeltaS_("surroumding") lt 0 , (r) "Process is spontaneous"),((D)(DeltaG_("system"))_(T.P) gt 0,(s)"System is unable to do useful work"):}`

Text Solution

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The correct Answer is:
`(A) rarr (p,s); (B) rarr (r); (C) rarr(q,s); (D)rarr (q,s)`
`(A)DeltaG_("sys") =0 implies` equilibrium and free energy is zero. So, no useful work.
`(B) DeltaS_("universe") gt 0 implies` Spontaneous process and able to do usefull work.
`(C) DeltaS_("universe") lt 0 implies` Nonspontaneous process and unable to do usefull work.
`(D) DeltaG_("sys") gt 0 implies` Nonspontaneous process and unable to do useful work.
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{:(,"Column-I",,"Column-II"),((a),(DeltaG_(system))_(T.P^(=0)),(p),"Process in equilibrium"),((b),DeltaS_(system)+DeltaS_("sorrrounding")gt0,(q),"Process is non-spontaneous"),((c),DeltaS_(system)+DeltaS_("Surrounding")lt0,(r),"Process is spontaneous"),((d),(DeltaG_(system))+_(T,P)gt0,(s),"System is unable to do useful work"):}

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