⚛️ Physics · Kinetic Theory · NEET & JEE

One mole of a monatomic gas is mixed with one mole of a diatomic gas. The ratio γ = Cp/Cv of the mixture is:

Answer: 1.5.

A 1.33
B 1.4
C 1.67
D 1.5

Correct answer: D. 1.5

Explanation: Cv,mix = ((3/2)+(5/2))R/2 = 2R, Cp,mix = 3R, so γ = 3R/2R = 1.5.

Not all gas molecules move at the same speed - the Maxwell-Boltzmann distribution shows the spread, with the most probable speed v_p slightly less than the average v_avg, which is slightly less than the root-mean-square speed v_rms used in the pressure formula.

Concept context

Kinetic theory of gases connects molecular motion to pressure and temperature, explaining gas laws, specific heats, and molecular speeds.

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One mole of a monatomic gas is mixed with one mole of a diatomic gas. The ratio &gamma; = C<sub>p</sub>/C<sub>v</sub> of the mixture is:

Concept context

More Kinetic Theory questions

One mole of a monatomic gas is mixed with one mole of a diatomic gas. The ratio γ = C<sub>p</sub>/C<sub>v</sub> of the mixture is: