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Calculate the freezing point depression ...

Calculate the freezing point depression and boiling point elevation of a solution of `10.0 g` of urea `(M_(B)=60)` in `50.0 g` of water at `1 atm`. pressure.`K_(b)` and `K_(f)` for water `0.52^(@)C m^(-1)` and `1.86^(@)C m^(-1)` respectively.

Text Solution

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Depression in freezing point `=Delta T_f ` and Elevation in boiling point `=DeltaT_b`
`DeltaT_f=K_f"" (((g_B)/(M_B))/(g_A)xx1000) =1.86 (((10)/(60))/(50)xx1000)=6.2^@C`
`DeltaT_b=K_b"" (((g_B)/(M_B))/(g_A)xx1000) =0.52 (((10)/(60))/(50)xx1000)=1.7^@C`
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