The molar concentration of urea solution = Mol. wt. of urea 10g/dm3=6010M=61M Molar concentration of 5% nonvolatile solute = mol. wt. of non - volatile solute 50 g/dm3= m50M Both solutions are isotonic to each other; therefore, 61=m50 m=50×6=300 g mol−1 Caution 10 g per dm3 of urea is isotonic with 5% solution of a non-volatile solute. Hence, osmosis cannot occur between the two solutions. Thus, their molar concentrations are equal to each other.
A solution containing 10 g per dm^3 of urea (molecular mass =60 ~g ~mol^-1) is isotonic with a 5 % solution of a nonvolatile solute. The molecular…
NEET UG 2006 — Chemistry Physical Chemistry
2006mcqhard
A solution containing 10 g per dm3 of urea (molecular mass =60 g mol−1) is isotonic with a 5% solution of a nonvolatile solute. The molecular mass of this nonvolatile solution is:
Official previous-year question
Held on 30 Apr 2006 · Verified 9 Jul 2026.
Options
- A
250 g mol−1
- B
300 g mol−1
- C
350 g mol−1
- D
200 g mol−1
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