A triatomic molecule can have a linear configuration, as does Co, (Figure a), or it can be nonlinear, like H,0 (Figure b). Suppose the temperature of a gas of triatomic molecules is sufficiently low that vibrational motion is negligible. C H (a) What is the molar specific heat at constant volume, expressed as a multiple of the universal gas constant (R) if the molecules are linear? EinnT = 2.5R (b) What is the molar specific heat at constant volume, expressed as a multiple of the universal gas constant (R) if the molecules are nonlinear? EintnT = 3R At high temperatures, a triatomic molecule has two modes of vibration, and each contributes to the molar specific heat for its kinetic energy and another R for its potential energy. (c) Identify the high-temperature molar specific heat at constant volume for a triatomic ideal gas of the linear molecules. (Use the following as necessary: R.) Eint/nT = (d) Identify the high-temperature molar specific heat at constant volume for a triatomic ideal gas of the nonlinear molecules. (Use the following as necessary: R.) Eint/nT = (e) Explain how specific heat data can be used to determine whether a triatomic molecule is linear or nonlinear.
A triatomic molecule can have a linear configuration, as does Co, (Figure a), or it can be nonlinear, like H,0 (Figure b). Suppose the temperature of a gas of triatomic molecules is sufficiently low that vibrational motion is negligible. C H (a) What is the molar specific heat at constant volume, expressed as a multiple of the universal gas constant (R) if the molecules are linear? EinnT = 2.5R (b) What is the molar specific heat at constant volume, expressed as a multiple of the universal gas constant (R) if the molecules are nonlinear? EintnT = 3R At high temperatures, a triatomic molecule has two modes of vibration, and each contributes to the molar specific heat for its kinetic energy and another R for its potential energy. (c) Identify the high-temperature molar specific heat at constant volume for a triatomic ideal gas of the linear molecules. (Use the following as necessary: R.) Eint/nT = (d) Identify the high-temperature molar specific heat at constant volume for a triatomic ideal gas of the nonlinear molecules. (Use the following as necessary: R.) Eint/nT = (e) Explain how specific heat data can be used to determine whether a triatomic molecule is linear or nonlinear.
Chapter2: The Kinetic Theory Of Gases
Section: Chapter Questions
Problem 81AP: One process for decaffeinating coffee uses carbon dioxide ( M=44.0 g/mol) at a molar density of...
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