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Question: Answered & Verified by Expert
A flask contains argon and chlorine in the ratio of $2: 1$ by mass. The temperature of the mixture is $27^{\circ} \mathrm{C}$. The ratio of average kinetic energies of two gases per molecule is
PhysicsKinetic Theory of GasesAP EAMCETAP EAMCET 2015
Options:
  • A $1:1$
  • B $2:1$
  • C $3:1$
  • D $6:1$
Solution:
2430 Upvotes Verified Answer
The correct answer is: $1:1$
(a) The average kinetic energy of molecules is given by
$\mathrm{KE}_{\mathrm{av}}=\frac{3}{2} K T$. So it depends only on temperature
$\mathrm{KE}_1: \mathrm{KE}_2=1: 1$

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