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Molar Heat Capacity and Number of Degrees of Freedom

Rotational degrees of freedom for non linear molecules

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Unformatted text preview: ration) Translational Degrees of Freedom: For all molecules, there are three degrees of freedom for translational motion (thermal energy can be absorbed as translational kinetic energy in three independent directions, x, y and z). Rotational Degrees of Freedom: For non- linear molecules, there are also three degrees of freedom for rotational motion (thermal energy can be absorbed as kinetic energy for rotation along three independent perpendicular axes). For linear molecules: #DOF(rotation) = 2 For linear molecules, there are only two degrees of freedom for rotational motion, since rotation along the molecular axis of the linear molecule does not absorb energy or lead to motion of its atoms. For non- linear molecules: #DOF(rotation) = 3 Vibrational Degre...
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