Atmospheric pressure we have reached the boiling

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atmospheric pressure, we have reached the boiling point of the liquid. z The normal boiling point, T b , is the temperature of the liquid at which its vapor pressure is equal to 1 atm. z The lower the vapor pressure, the higher the boiling point.
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Example Problem z The vapor pressure of chlorine dioxide, ClO 2 , is 155 Torr at –22.75 °C and 485 Torr at 0 °C. Calculate: z (a) the standard enthalpy of vaporization, z (b) the standard entropy of vaporization, z (c) the standard free energy of vaporization, and z (d) the normal boiling point of ClO 2 .
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