1.

The normal boiling point of a liquid 'A' is 350K. DeltaH_("vap") at normal boiling point is 35 kJ/mole. Pick out the correct statement(s). (Assume DeltaH_("vap") to be independent of pressure)

Answer»

`Delta S_("VAPORISATION") gt 100 J//K` mole at 350K and 0.5atm
`Delta S_("vaporisation") lt 100 J//K` mole at 350K and 0.5 atm
`Delta S_("vaporisation") lt 100 J//K` mole at 350K and 2 atm
`Delta S_("vaporisation") = 100 J//K` mole at 350K and 2 atm

SOLUTION :`Delta S = (Delta H)/(BP) = (35 xx 1000)/(350) = 100J//K` mole at 1 atm if `P DARR Delta S uarr`


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