Physical Chemistry
2nd Edition
ISBN: 9781133958437
Author: Ball, David W. (david Warren), BAER, Tomas
Publisher: Wadsworth Cengage Learning,
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Question
Chapter 2, Problem 2.9E
Interpretation Introduction
Interpretation
To calculate the reversible work of 1.00 mol of ethane, C2H6, expanding at 377K from 1.00L to 15.00 L, by assuming it as van der Waals gas
Concept introduction
The work is performed on an object when an object moves a certain distance s due to the force F. Mathematically, it is indicated by the dot product of the force vector F and the distance vector s. The mathematical equation is given below,
Work = F.s = |F||s| cos Ѳ
Where Ѳ is the angle between the vectors F and s. The unit of work is joules. Work is a way to transfer the energy. The energy is defined as the ability to do work and so energy and work are described using the same unit in joules.
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Check out a sample textbook solutionStudents have asked these similar questions
A sample of 4.50 g of methane occupies 12.7 dm³ at 310 K.
(a) Calculate the work done when the gas expands isothermally against a constant external
pressure of 200 Torr until its volume has increased by 3.3 dm³.
(b) Calculate the work that would be done if the same expansion occurred reversibly.
A sample of methane of mass 45.00 g initially occupies 13.11 L at 310.0 K. Calculate the
work done when the gas expands isothermally and reversiblly until its volume increases to
17.41 L.
1 Torr = 133.33 Pa; MW of methane = 16.04 g/mol and R=8.3145 J/K mol.
W =
J. 4 sig. fig.
(c) The work done by helium on a balloon was 1.659 kJ. If o.95 mol of helium was allow
to expand to 18 L at a constant temperature of 30 °C. What was the initial volume of
the gas used?
Chapter 2 Solutions
Physical Chemistry
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