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11 June, 13:28

Calculate the osmotic pressure at 25°C across a semipermeable membrane separating seawater (1.14 M total particles) from a 0.503 M solution of aqueous NaCl.

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  1. 11 June, 13:30
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    The osmotic pressure is 24.6 atm

    Explanation:

    π = M. R. T. i → Formula for osmotic pressure

    i = 2 ⇒ NaCl → Na⁺ + Cl⁻

    i means Van't Hoff factor, which indicates the numbers of ions dissolved, by the stoichiometry.

    R → Universal gases constant

    T→ T° in K → T°C + 273 → 25°C + 273 = 298K

    π = Osmotic pressure

    Let's replace data given ⇒ π = 0.503 mol/L. 0.082L. atm/mol. K. 298K. 2

    π = 24.6 atm
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