Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The vapour-pressure of a dilute aqueous solution of glucose (C6H12O6) is 750 mm of mercury at 273 K. Calculate (i) molality and (ii) mole-fraction of the solute
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
Given that :
Temperature = 273 K
boiling point of H2O = 373 K
∴ vapour pressure of H2O = 76 cm
We have,
= 
∴ molality
= 
= 
× 
= 
= 0.741 mol/kg of solvent
Also we have,
= 
∴ mole fraction = 
= 
= 
= 0.013
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