Use the equipartition principle to calculate Cp for a) N₂ b) CO₂ c) SO₂ d) CH₄ in gas phase. First, consider the molecules as rigid, then classically vibrating.

The solutions should be in J/(K mol):

For rigid: a) 29.1; b) 29.1; c) 33.3; d) 33.3.

For vibrating: a) 37.4; b) 62.4; c) 58.2; d) 108