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Entropy change involved in the conversio...

Entropy change involved in the conversion of 1 mole of liquid water at 373 K to vapour at the same temperature will be ____ (`DeltaH_"vap"=2.257 kJ g^(-1)`)

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`DeltaH_"vap"=2.257 k J g^(-1)`
1 mole of `H_2O`=18 g
`therefore DeltaH_"vap"` for a 1 mole = `2.257xx18=40.626 k J g^(-1)` .
`T_b` =373 K
`DeltaS_"vap"=40.626/373=0.1089 "kJ mol"^(-1)`
`=0.109 "kJ mol"^(-1)`
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