1.

A mixture of (H_(2)O+C_(6)H_(5)NO_(2)) boils at 90^(@)C. In the vapours of mixture partial vapour pressures of H_(2)O and C_(6)H_(5)NO_(2) are 733 mm Hg and 27 mm Hg respectively. The W_(H_(2)O)//W_(C_(6)H_(5)NO_(2)) is

Answer»


Solution :`(P'_(H_(2)O))/(P'_(C_(6)H_(5)NO_(2)))=(W_(H_(2)O))/(m_(H_(2)O))XX(M_(C_(6)H_(5)NO_(2)))/(W_(C_(6)H_(5)NO_(2)))`
`P'_(H_(2)O)=733mm HG, P'_(C_(6)H_(5)NO_(2))=27MM Hg`
and `m_(H_(2)O)=18, m_(C_(6)H_(5)NO_(2))=123`
`(W_(H_(2)O))/(W_(C_(6)H_(5)NO_(2)))=(733)/(27)xx(18)/(123)=3.972~~4`


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