Spontaneous irreversible processes are processes in which entropy increases

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This post was last edited by 2005180005 on 2017-8-11 20:01. Regarding the concept of entropy, which of the following statements are correct? A. A spontaneous irreversible process is a process in which entropy decreases. B. The microscopic physical meaning of entropy is a measure of the degree of disorder in a system. C. Entropy is a state function; it is independent of the path taken and whether the process is reversible or not. D. The generation of entropy is never less than zero. The correct answers are BD. Statement A is incorrect; if it were changed to “A spontaneous irreversible process is a process in which entropy increases”, would that statement be correct? The principle of entropy increase states that the entropy of an isolated thermodynamic system never decreases; it always increases or remains constant. So if it is not an isolated system, could the entropy of a spontaneously occurring irreversible process decrease?