A solution of sucrose (Molar mass = 342 g/mol) is prepared by dissolving 68.4 g of it per litre of solution, what is its osmotic pressure (R=0.082 L atm K - 1 m o l - 1 ) at 273 K?

Question

A solution of sucrose (Molar mass = 342 g/mol) is prepared by dissolving 68.4 g of it per litre of solution, what is its osmotic pressure (R=0.082 L atm K - 1 m o l - 1 ) at 273 K?, 4.48 atm, 2 atm, 1 atm, 5 atm

MARKS App · Accepted Answer

Sucrose is non ionisable so i = 1 π = i CRT = 1 × 68.4 342 1 0.082 × 273 = 4.477 atm ≃ 4.48 atm

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