(c) Consider atomic oxygen gas at the temperature of 298.15 K. (i) Calculate its heat capacity at constant volume, assuming that the first two excited states have a non-negligible population. (ii) What would happen to the heat capacity at constant volume when the temperature increases to 1000 K? Discuss qualitatively. Data: The term symbols of the ground and first two excited states are (in increasing order): 3P2, 3P1 and 3Po; AV₁-2 = 158.5 cm; AV₁3 = 226.5 cm−¹

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(c)
Consider atomic oxygen gas at the temperature of 298.15 K.
(i) Calculate its heat capacity at constant volume, assuming that the first two
excited states have a non-negligible population.
(ii) What would happen to the heat capacity at constant volume when the
temperature increases to 1000 K? Discuss qualitatively.
Data: The term symbols of the ground and first two excited states are (in increasing
order): 3P2, 3P1 and 3Po; AV₁-2 = 158.5 cm; AV₁3 = 226.5 cm−¹
Transcribed Image Text:(c) Consider atomic oxygen gas at the temperature of 298.15 K. (i) Calculate its heat capacity at constant volume, assuming that the first two excited states have a non-negligible population. (ii) What would happen to the heat capacity at constant volume when the temperature increases to 1000 K? Discuss qualitatively. Data: The term symbols of the ground and first two excited states are (in increasing order): 3P2, 3P1 and 3Po; AV₁-2 = 158.5 cm; AV₁3 = 226.5 cm−¹
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