The heat capacity ratio of a gas determines the speed of sound in it through the formula
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The heat capacity ratio of a gas determines the speed of sound in it through the formula cs = (γRT/M)1/2, where γ = Cp /CV and M is the molar mass of the gas. Deduce an expression for the speed of sound in a perfect gas of
(a) Diatomic,
(b) Linear triatomic,
(c) Nonlinear triatomic molecules at high temperatures (with translation and rotation active). Estimate the speed of sound in air at 25°C.
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Solution a The diatomic molecules are degenerate in ground state Thus they h...View the full answer
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