SAT2化学which of the following is not a state function?A Tempetatute B density c work D volumn E pressure

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SAT2化学which of the following is not a state function?A Tempetatute B density c work D volumn E pressure

SAT2化学which of the following is not a state function?A Tempetatute B density c work D volumn E pressure
SAT2化学
which of the following is not a state function?
A Tempetatute B density c work D volumn E pressure

SAT2化学which of the following is not a state function?A Tempetatute B density c work D volumn E pressure
下面哪个不是状态函数?
A 温度 B 浓度 C功 D体积 E压力
状态函数(state function),即指表征体系特性的宏观性质,多数指具有能量量纲的热力学函数(如内能、焓、吉布斯自由能、亥姆霍茨自由能).状态函数只对平衡状态的体系有确定值,其变化值只取决于系统的始态和终态.另外,状态函数之间相互关联、相互制约.状态函数按其性质可分为两类,即广度性质和强度性质,其区别在于是否与物质的量有关.
温度、压力、体积、密度、能量、形态等,还有热力学函数:U(内能)、H(焓)、G(吉布斯函数)、F(自由能)、S(熵)等可以定义为体系的一个与路径无关的性质,而功和热则不可以,因为功和热无法与体系的特定状态联系在一起.
所以应该选C.

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