1.

The latent heat of vapourisation of water is 9700 Cal/mole and if the b.p. is 100^(@)C, equllioscopic constant of water is

Answer»

`0.513^(@)C` kg/mol
`1.026^(@)C` kg/mol
`10.26^(@)C` kg/mol
`1.832^(@)C` kg/mol

SOLUTION :`K_(b)=(M_(1)RT_(b)^(2))/(1000 DELTA H_(V))=(18xx1.987xx(373)^(2))/(1000xx9700)=0.513^(@)C`


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