Assume you seal 1.0 g of diethyl ether (Figure 11.12) in an evacuated 100.-mL flask. If the flask is held at 30°C, what is the approximate gas pressure in the flask? If the flask is placed in an ice bath, does additional liquid ether evaporate, or does some ether condense to a liquid?

Data given in Figure 11.12

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Pressure (mm Hg) 1000 800 600 400 200 0 760 mm Hg -20⁰ Diethyl ether 0⁰ 20⁰ Normal BP 34.6 °C Ethanol 40⁰ Temperature (°C) 60° Normal BP 78.3 °C 80⁰ Normal BP 100 °C 100⁰ 120°