Calculate the change in the entropies of the system and the surroundings, and the totalchange in entropy, when the volume of a sample of argon gas of mass 21 g at 298 Kand 1.50 bar increases from 1.20 dm³ to 4.60 dm³ in (a) an isothermal reversibleexpansion, and (b) an adiabatic reversible expansion.

Moles of Ar = 21/4 = 5.25 mol (a) For isothermal reversible, □Ssys = nR×ln(V2/V1) = 5.25 × 8.314…

Answered: entropy, when the volume of a sample of…

entropy, when the volume of a sample of argon gas of ma ar increases from 1.20 dm³ to 4.60 dm³ in (a) an isotherm and (b) an adiabatic reversible expansion.

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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Question

Calculate the change in the entropies of the system and the surroundings, and the total
change in entropy, when the volume of a sample of argon gas of mass 21 g at 298 K
and 1.50 bar increases from 1.20 dm³ to 4.60 dm³ in (a) an isothermal reversible
expansion, and (b) an adiabatic reversible expansion.

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