Question
.53 In the Dumas-bulb technique for determining the molar
mass of an unknown liquid, you vaporize the sample of a
liquid that boils below 100 °C in a boiling-water bath and
determine the mass of vapor required to fill the bulb. From
the following data, calculate the molar mass of the unknown
liquid: mass of unknown vapor, 1.012 g; volume of bulb,
354 cm; pressure, 742 torr; temperature, 99 °C.
3.
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Transcribed Image Text:.53 In the Dumas-bulb technique for determining the molar mass of an unknown liquid, you vaporize the sample of a liquid that boils below 100 °C in a boiling-water bath and determine the mass of vapor required to fill the bulb. From the following data, calculate the molar mass of the unknown liquid: mass of unknown vapor, 1.012 g; volume of bulb, 354 cm; pressure, 742 torr; temperature, 99 °C. 3.
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