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kinetic theory

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Air is filled at 60deg C in a vessel of open mouth. Upto what temperature should the vessel be heated so that one-fourth of the air may escape?
Ans 171degC

  • kinetic theory -

    PV = n R T
    P,V and R are constant
    so n T is constant
    n1 T1 = n2 T2
    n2 = .75 n1

    n1 T1 = .75 n1 T2
    T2 = T1/.75
    T1 = 273 + 60 = 333
    so
    T2 = 333/.75 = 444
    444-273 = 171

  • kinetic theory -

    thank you soo much :)

  • kinetic theory -

    thnx

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