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Discussion :: Chemical Engineering Thermodynamics

  1. The root mean square speed of molecules of a gas is equal to (where, m = mass of the molecule K = Boltzman's constant, T = absolute temperature)

    2. A.

     √(2KT/m)
    B.

     √(3KT/m)
    C.

     √(6KT/m)
    D.

     3KT/m

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    Answer : Option B

    Explanation :

    empirical relation:
    Root mean square speed =√3KTm

    Whereas average velocity =√8KTπm

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