Chemistry: The Molecular Nature of Matter and Change 7th Edition

Published by McGraw-Hill Education
ISBN 10: 007351117X
ISBN 13: 978-0-07351-117-7

Chapter 21 - Problems: 21.53

Answer

See explanation below.

Work Step by Step

A non-volatile solute is dissolved in methanol with a solubility of 20 g/100 mL. Calculate the molar mass of the solute if the vapor pressure of this saturated solution at 20°C is 83 mmHg. Given that the density and vapor pressure of methanol are 0.792 g/mL and 95.7 mmHg at 20°C respectively.
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