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Manpreet Darpan Konda
Asked: 2022-11-10T02:41:10+05:30 In:

`1 Lit`. Of aq. Solution of urea having density`=1.060gm//mL` is found to have `DeltaT_(b)=0.5^(@)C`, if temp. of this solution increase to `101.5^(@)C` then calculate amount of water which must have gone is vapour state upto this pt. given `K_(b)=0.5K kg mol^(-1)` for water

`1 Lit`. Of aq. Solution of urea having density`=1.060gm//mL` is found to have `DeltaT_(b)=0.5^(@)C`, if temp. of this solution increase to `101.5^(@)C` then calculate amount of water which must have gone is vapour state upto this pt. given `K_(b)=0.5K kg mol^(-1)` for water
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  1. `0.5=0.5xx(1060)/(1060)(M)/(60) rArr 1060xx60=M`
    `1` Lit solution`=1060gm`
    (Mass of water)`|=1000gm`
    urea`=60gm`
    `DeltaT_(b)=(“molality”)=K_(b)`
    (Molality) `rArr 3=(60)/(60)xx(1000)/(W_(“water”)`
    `W_(“water”)=(1000)/(3)gm`.
    mass of water vaporised`=1000-(2000)/(3)gm=666.67gm`

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