Three closed vessels P, Q and R are at the same temperature and contain gases which obey the Maxwellian distribution of velocities. Vessel P contains only H₂, Q only O₂, and R, a mixture of equal quan

Question

Three closed vessels P, Q and R are at the same temperature and contain gases which obey the Maxwellian distribution of velocities. Vessel P contains only H₂, Q only O₂, and R, a mixture of equal quantities of H₂ and O₂. If the average speed of the H₂ molecules in vessel P is V₁, that of the O₂ molecules in vessel Q is V₂, the average speed of the H₂ molecules in vessel R is

TestHub · Accepted Answer

Average speed u av = √(8RT/π M) depends only on temperature and the species' own molar mass. In vessel R the H₂ molecules are at the same temperature as in P with the same M, so their average speed is unchanged at V₁; the presence of O₂ is irrelevant. Confirms Ans (b) V₁.

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