Concise Physical Chemistry

(Tina Meador) #1

c03 JWBS043-Rogers September 13, 2010 11:24 Printer Name: Yet to Come


PROBLEMS AND EXAMPLE 55

Problem 3.12
The ratioγ=Cp/CVis 1.40 for nitrogen, N 2. The speed of sound in air (mostly
nitrogen) is said to be

vsound∼=


γRT
M

where M is the molar mass of nitrogen. Find the value ofvsoundat 273 K and compare
it with the experimental value of 334 m s−^1.
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