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The molar heat capacity of oxygen gas at `STP` is nearly `2.5 R`. As the temperature is increased, it gradually increase and approaches `3.5 R`. The most appropriate reason for this behaviour is that at high temperaturesA. oxygen does not behave as an ideal gasB. oxygen molecules dissociate in atomsC. the molecules collides more frequentlyD. molecular vibration gradually becomes effective |
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Answer» Correct Answer - D `C_(v)=2.5 R` As temperature increases, vibrational degree of freedom becomes 2 at high temperature `C_(v)=7/2 R =3.5R` |
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