Air undergoes a polytropic process in apiston-cylinder assembly from pį = 1 bar, T1295 K to p2 = 9 bar. The air is modeled asan ideal gas and kinetic and potential energyeffects are negligible.For a polytropic exponent of 1.8, determinethe work and heat transfer, each in kJ per kgof air,(1) assuming constant cy evaluated at 300 K.(2) assuming variable specific heats.

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Answered: Air undergoes a polytropic process in a…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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(a) Suppose that attractions are the dominant interaction between gas molecules, and the equation of state is p = nRT/V – n2a/V2. Determine the work (W(non-ideal gas)) of reversible, isothermal expansion of such a gas from initial volume V (initial) = 20.0 L to final volume V(final) = 40.0 L if n = 2.00 mol, T = 300 K, and a = 3.621 atm-L2/mol2. Watch your units. (b)Determine the work (W(ideal gas) of reversible, isothermal expansion of an ideal gas from initial volume V (initial) = 20.0 L to final volume V(final) = 40.0 L if n = 2.00 mol and T = 300 K. (c) Show the difference W(non-ideal) – W(ideal). If all your calculations are done correctly, this result shows you the effect of attractive interaction between gas particles on the work done by the system.
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Air undergoes a polytropic process in a piston-cylinder assembly from pi = 1 bar, T1 295 K to p2 = 9 bar. The air is modeled as an ideal gas and kinetic and potential energy effects are negligible. For a polytropic exponent of 1.8, determine the work and heat transfer, each in kJ per kg of air,