試題詳解

35. The molar specific heat at constant volume is , and the molar specific heat at constant pressure is . For an ideal gas at a fixed temperature, which of the following statements is true?
(A) is always greater than , because part of the absorbed heat is used to do work to the environment.
(B) is always greater than , because the environment absorbs additional heat.
(C) is always less than , because part of the absorbed heat is used to do work to the environment.
(D) is always less than , because the environment absorbs additional heat.
(E) There is no certain relation between and .