1.

An aquesous solution of urea [6%w/v] is isotonic with NaCI solution then mass-volume percentage (%w/v) of NaCI solution then mass- volume precentage (%w/v) of NaCI solution will be :-

Answer»

`1.46%`
`5.85%`
`2.92%`
`11.7%`

Solution :`pi_(1)=pi_(2)`
`:.i_(1)c_(1)=i_(2)c_(2)`
`1XX(6)/(60)xx10=2xx(W)/(58.5)xx10`
`:.W=(58.5)(20)=2.925g`


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