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3 April, 18:55

What is the osmotic pressure of a 0.065 molar aqueous NaCl at 298 Kelvin?

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  1. 3 April, 19:22
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    According to osmotic pressure formula:

    π = iCRT

    when π is the osmotic pressure

    i is van't Hoff factor = 2

    R universal gas constant 0.0821

    T temperature in Kelvin = 298 K

    C is molar concentration of solution = 0.065 M

    So by substitution, we will get the osmotic pressure:

    ∴π = 2 * 0.065 * 0.0821 * 298 = 3.18 atm
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