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At atmospheric pressure, the boiling point of diethyl ether is 35°C and that of ethanol is 78°C. From these, we can gather that diethyl ether
is more volatile than ethanol and has a lower vapor pressure.
is more volatile than ethanol and has a higher vapor pressure.
is less volatile than ethanol and has a higher vapor pressure.
is less volatile than ethanol and has a lower vapor pressure.