The Molecular Weight of an unknown liquid is determined using the Dumas Method. The following data has been obtained: Atmospheric Pressure = 754.6 Torr Volume of the Flask = 213 mL Temp. of Water Bath = 100 °C Mass of Re-Condensed Liquid = 0.582 g What is the Molecular Weight of the liquid?

The Molecular Weight of an unknown liquid is determined using the Dumas Method. The following data has been obtained: Atmospheric Pressure = 754.6 Torr Volume of the Flask = 213 mL Temp. of Water Bath = 100 °C Mass of Re-Condensed Liquid = 0.582 g What is the Molecular Weight of the liquid?

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter11: Liquids And Solids

Section: Chapter Questions

Problem 11.1QE

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Concept explainers

Kinetic-Theory of Gases

Kinetic theory of gases is the model or method which was developed in the 19th century by Maxwell and Boltzmann. This is possible as the interatomic force which is of short-range forces that are important for solids and liquids can be neglected for gases. This theory or gas law gives a molecular interpretation of the pressure and temperature of a gas and is consistent with gas laws and Avogadro’s hypothesis. This theory is very helpful to correctly explain the specific heat capacities of many gases, kinetic energy and it also explains the transport qualities such as viscosity, thermal conductivity, and diffusion with molecular parameters. As stated in the kinetic-molecular theory, the temperature of a substance or gas particle is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles, called average kinetic energy.

Question

The Molecular Weight of an unknown liquid is determined using the Dumas Method. The following data has been obtained:

Atmospheric Pressure = 754.6 Torr
Volume of the Flask = 213 mL
Temp. of Water Bath = 100 °C
Mass of Re-Condensed Liquid = 0.582 g

What is the Molecular Weight of the liquid?

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