本题目来源于试卷: Particulate Nature of Matter B.3 Ideal Gas Model，类别为 IB物理学
[单选题]
Systems A and B both consist of an ideal gas at initbb6es .a d*emj;xe *,mial thb 6ic: 86o-/xbdxx ewemperature T. In System A, the temperature of the gas is increased. In System B, gas molecules are added with the temperature of the system remaining constant.
ce6:i8 dx/bx b hw6ox-
Which of these statements about the total intermolecular potential energy of the two systems is correct?
A. Potential energy increases ;Potential energy increases
B. Potential energy is constant ;Potential energy increases
C. Potential energy is constant ;Potential energy is constant
D. Potential energy increases; Potential energy is constant
参考答案: C
本题详细解析:
Explanation: Ideal gases have no intermolecular forces between the particles, and therefore all of their internal energy consists of kinetic energy. There is no intermolecular potential energy. In both cases, the described changes will not affect the potential energy, as the potential energy is always equal to zero.
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