MHT CET20243 May 2024Morning ShiftChemistrySolutionsActual
Which from the following statements is correct for aqueous solution of 6 gL ⁻¹ urea and 17 12 ~g ~L ⁻¹ of sucrose? [Molar mass of urea =60 ~g ~mol ⁻¹ Molar mass of sucrose =342 ~g ~mol ⁻¹ ]
Options
- AOsmotic pressure exhibited by urea solution is lower than that of sucrose solution.
- BUrea solution is hypertonic to sucrose solution,
- CThese solutions are isotonic.
- DOn doubling the concentration of sucrose solution it becomes hypertonic to urea solution.
Correct answer
B. Urea solution is hypertonic to sucrose solution,
Step-by-step solution
M _ urea = mass of urea in solution molar mass of urea volume of solution (in L ) = 6 ~g 60 ~g ~mol ⁻¹ 1 Litre =0.1 ~mol ~L ⁻¹ M _ sucrose = mass of sucrose in solution molar mass of sucrose volume of solution (in L ) = 17.12 ~g 342 ~g ~mol ⁻¹ 1 Litre ^2 =0.05 ~mol ~L ⁻¹ Urea has higher solute concentration (0.1 M ) than sucrose ( 0.05 M ). Thus, urea solution is hypertonic to sucrose.