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12 September, 11:18

Calculate the vapor pressure at 25? c of hexane above the solution. the vapor pressure of pure hexane at 25? c is 151 torr.

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  1. 12 September, 13:32
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    One of the many ways in order to solve for the vapor pressure of pure components at a given temperature is through the Antoine's equation which is written below,

    P = 10^ (A - B/C+T)

    where A, B, and C are constants and T is the temperature in °C and P is the vapor pressure in mm Hg.

    For hexane,

    A = 7.01

    B = 1246.33

    C = 232.988

    Substituting the known values,

    P = 10^ (7.01 - 1246.33/232.988+25)

    P = 151.199 mm Hg
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