COMEDK2015PhysicsKinetic Theory of Gases
The average energy of molecules in a sample of oxygen gas at 300 ~K is 6.21 10⁻²¹ ~J . The corresponding values at 600 ~K are
Options
- A12.12 10⁻²¹ ~J
- B8.78 10⁻²¹ ~J
- C6.21 10⁻²¹ ~J
- D12.42 10⁻²¹ ~J
Correct answer
D. 12.42 10⁻²¹ ~J
Step-by-step solution
At temperature, T₁=300 ~K Average kinetic energy, E₁=6.21 10⁻²¹ ~J T₂=600 ~K , E₂= ? We know that, average kinetic energy of gas molecule, aligned E₂ E₁ &= T₂ T₁ E₂= T₂ T₁ E₁ &= 600 300 6.21 10⁻²¹ &=2 6.21 10⁻²¹ &=12.42 10⁻²¹ ~J aligned