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31 October, 16:09

Assuming that the gas becomes saturated with benzene vapor and that the total gas volume and temperature remain constant, what is the vapor pressure of the benzene in torr?

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  1. 31 October, 18:31
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    87.07 torr

    Explanation:

    n:7.7059 g-5.9203 g = 1.7856 g

    Molar mass of benzene = 78.11g/mol

    n=1.7856 g / 78.11g/mol = 0.023 mol

    T = 273 + 28 = 301 K

    PV=nRT.

    Weget

    P=nRT/V

    P = (0.023 mol x 8.3 J/molK x 301 K) / 0.00495m3 = 11608. 3Pa = 87. 07 Torr

    Answer: 87. 07 Torr
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