1.

Molar heat of vapourisation of a liquid is 4.8 kJ "mol"^(-1) . If the entropy change is 16 J mol^(-1) K^(-1) , the boiling point of the liquid is

Answer»

323 K
`27^@C`
`164K`
0.3 K

Solution :`DeltaS_V=(DeltaH_V)/T_b`
`T_b=(DeltaH_V)/(DeltaS_V)="4800 J MOL"^(-1) /("16 J mol"^(-1) K^(-1))=300 K = 27^@C`


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