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An aqueous solution of urea containing 1...

An aqueous solution of urea containing 18 g urea in 2500 `cm^(3)` of the solution has a density equal to 1.052. if the molecular weight of urea is 60, the molality of the solution is

A

`0.200`

B

`0.192`

C

`0.100`

D

`1.200`

Text Solution

Verified by Experts

The correct Answer is:
B
1500 cc. solution `=1500xx1.052g =1578g`
Weight of solvent `=1560g`
Weight of solute =18 g
Molality `=("weight of solute")/("molecular weight of solute"xx)`
weight of solvent in kg
`=(18xx1000)/(60xx1560)=0.192` m
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Knowledge Check

  • An aqueous solution of urea is

    A
    Acidic
    B
    Basic
    C
    Neutral
    D
    Amphoteric

  • An aqueous solution of urea is:

    A
    acidic
    B
    basic
    C
    neutral
    D
    amphoteric

  • An aqueous solution of urea containing 18 g urea in 1500 cm^3 of solution has a density of 1.052 g/ cm^3 . If the molecular weight of urea is 60, then the molality of solution is-

    A
    0.2
    B
    0.192
    C
    0.064
    D
    1.2
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