COMEDK2020ChemistryStates of Matter

One mole of oxygen at 273 ~K and one mole of sulphur dioxide at 546 ~K are taken in two separate containers, then

Options

Akinetic energy of O ₂> kinetic energy of SO ₂
Bkinetic energy of O ₂ < kinetic energy of SO ₂
Ckinetic energy of both are equal
DNone of the above

Correct answer

B. kinetic energy of O ₂ < kinetic energy of SO ₂

Step-by-step solution

O ₂ is diatomic and degree of freedom is 5 . Kinetic energy of O ₂= 5 2 k T = 5 2 273 k SO ₂ is triatomic and degree of freedom is 7 . Kinetic energy of SO ₂= 7 2 546 k So, kinetic energy of SO ₂ is more than that of O ₂ i.e. SO ₂> O ₂

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