Forthe process H_(2)O(l) rarr H_(2)O(g) at T=100 ^(@)C and 1 atmosphere pressure, the correct choice is

Forthe process H_(2)O(l) rarr H_(2)O(g) at T=100 ^(@)C and 1 atmospher

1.	Forthe process H_(2)O(l) rarr H_(2)O(g) at T=100 ^(@)C and 1 atmosphere pressure, the correct choice is
Answer» `DeltaS_("system") gt 0` and `DELTAS _("surroundings") gt 0` `DeltaS_("system") gt 0` and `DeltaS _("surroundings") lt 0` `DeltaS_("system") lt 0` and `DeltaS _("surroundings") gt 0` `DeltaS_("system") lt 0` and `DeltaS _("surroundings") lt 0` Solution :At `T= 100^(@)C` and 1 atmosphere presssure (i.e.,boilingpoint ) ,thereexists the EQUILIBRIM `H_(2)O(l) hArr H_( 2)O (g)`, For this conditions,`DeltaS_("total") = 0` Hence,`DeltaS_("system") + Delta_("surroundings") = 0` or`DeltaS_("system") = - DeltaS_("surroundings")` But as `H_(2)O(l)` changes into `H_(2)O(g)`, `DeltaS_("system") = + ve , i.e.,gt 0` `:. DeltaS_("surroundings")` willbe`lt 0`.