In the followingquestions morethan one correlation is possible betweenoptions of both columns. Match the following : {:((i),"Entropy of vaporisation",(a),"decreases"),((ii),"K for spontaneous process",(b),"is always positive"),((iii),"Crystalline solid state",(c ) , "lowest entropy"),((iv),DeltaU" in adiabatic expansion of ideal gas",(d) ,(DeltaH_(vap))/(T_(b))):}

In the followingquestions morethan one correlation is possible between

1.	In the followingquestions morethan one correlation is possible betweenoptions of both columns. Match the following : {:((i),"Entropy of vaporisation",(a),"decreases"),((ii),"K for spontaneous process",(b),"is always positive"),((iii),"Crystalline solid state",(c ) , "lowest entropy"),((iv),DeltaU" in adiabatic expansion of ideal gas",(d) ,(DeltaH_(vap))/(T_(b))):}
Answer» SOLUTION :(i)Entropy of vaporisation is always `+ve` and equal to `DeltaH_(vap) // T_(b)` . Hence, (i) `rarr `(b), (d). (ii) `Delta_(r)G^(@)= - RT ln K `. If K is `+ve`, `Delta_(r)G^(@) = -ve` ad reaction is spontaneous . Hence, (ii) `rarr`(b). (iii) Crystalline solid state has lowest entropy. Hence , (iii) `rarr` (c ) (iv) During adiabaticexpansion of an ideal gas , `q=0`. Hence, `DeltaU = q+W` GIVES`DeltaU = w ,` i.e., work done is at the cost of internal energy which decreases . Hence, `(iv) rarr (a)`.