The speed of sound is given by V sound = ykT / m = yRT / M,

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The speed of sound is given by V _sound = √ykT / m = √yRT / M, where y = Cp / Cv.

a. What is the speed of sound in Ne, Kr, and Ar at 1000. K?

b. At what temperature will the speed of sound in Kr equal the speed of sound in Ar at 1000. K?

x. M_Ne = 0.0202 kg mol^–1 M_Kr = 0.0840 kg mol^–1 M_Ar = 0.0400 kg mol^–1

The heat capacities for the three gases are the same:

C_v = 12.5 JK-1 mol^-1 and C_p = 20.8 JK^-1 mol^-1

Thus, y = 1.6666.

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Physical Chemistry

ISBN: 978-0321812001

3rd edition

Authors: Thomas Engel, Philip Reid

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Question Posted: May 17, 2018 07:27 AM

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The speed of sound is given by V sound = ykT / m = yRT / M,

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