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{:(,"Column-I",,"Column-II"),((a),(Delta...

`{:(,"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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The correct Answer is:
`(a-p,s);(b-r);(c-q,s);(d-q,s)`
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{:("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"):}

In a reversible process, DeltaS_("system") + DeltaS_("surrounds") is:

{:(,"Column-I",,"Column-II"),((a),"Reversible adiabatic compression",(p),"Process in equilibrium"),((b),"Reversible vaporisation of liquid",(q),DeltaS_(system)lt0),((c),2N(g)rarrN_(2)(g),(r),DeltaS_("surrounding")lt0),((d),MgCO_(3)(s)oversetDeltararrMg(s)+CO_(2)(g),(s),DeltaS_("sublimation")=0):}

For a non-spontaneous reaction, at 30^(@)C, DeltaH gt 0 & DeltaS gt 0 . The reaction becomes spontaneous, by

Match the column-I with column-II {:("Column_I","Column-II"),((i) "Equilibrium",(a) DeltaG=+ve),((ii) "Spontaneous reaction",(b) DeltaG=0),((iii) "Non-spontaneous reaction",(c) DeltaG=-ve):}

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