The data from Problem P9.20 can be expressed in terms of the molality rather than the mole fraction of Br2 . Use the data from the following table and a graphical method to determine the Henry€™s law constant for Br₂in CCl₄at 25°C in terms of molality.

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тв, (mol kg-l) 0.026 0.028 0.039 Рв, (Torr) Рв, (Torr) MBr, (mol kg-) 1.52 0.086 0.157 0.158 5.43 9.57 1.60 2.39 9.83 10.27 4.27 0.067 0.167