In which of the following molecular weight determination methods, sensitivity of the measurements decreases as the...
In which of the following molecular weight determination methods, sensitivity of the measurements decreases as the molecular weight of the solute increases?
(a) Elevation of boiling point
(b) Depression of freezing point
(c) Osmotic pressure
(d) Viscosity
Its a multiple select question(1 ot more than 1 may be correct). please explain with proper eplanation
Homework Answers
In the determination of elevation of boiling point, viscosity and depression of freezing point, the sensitivity of measurements decrease as the molecular weight of solute increases because of elevation of boiling point and depression of freezing point molality is used for measurement purpose.
Molality = Number of moles of solute / Mass of solvent (kg)
The molecular weight of polymer is measured using viscometer. A high molecular weight increases the viscosity and increases the chemical resistance.
Osmotic pressure uses molarity for measurement purposes and is widely used for mass determination of polymers and biomolecules.
Correct options are a,b,d.
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