(a) Does the entropy of the surroundings increase for spontaneous processes?

검증된 단계별 안내

Understand that entropy is a measure of disorder or randomness in a system.

Recall the Second Law of Thermodynamics, which states that for any spontaneous process, the total entropy of the universe (system plus surroundings) always increases.

Recognize that the universe's entropy change (ΔS_universe) is the sum of the entropy change of the system (ΔS_system) and the entropy change of the surroundings (ΔS_surroundings).

For a process to be spontaneous, ΔS_universe = ΔS_system + ΔS_surroundings > 0.

Therefore, if the system's entropy decreases, the surroundings' entropy must increase by a greater amount to ensure that the total entropy change is positive, confirming that the entropy of the surroundings increases for spontaneous processes.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Entropy

Entropy is a measure of the disorder or randomness in a system. In thermodynamics, it quantifies the number of ways a system can be arranged, with higher entropy indicating greater disorder. Understanding entropy is crucial for analyzing spontaneous processes, as they tend to increase the overall entropy of the universe.

Spontaneous Processes

A spontaneous process is a reaction or change that occurs without external intervention. These processes are characterized by a decrease in the free energy of the system, often leading to an increase in the entropy of the universe. Recognizing the conditions under which a process is spontaneous helps in predicting the direction of chemical reactions.

Second Law of Thermodynamics

The Second Law of Thermodynamics states that the total entropy of an isolated system can never decrease over time. For a process to be spontaneous, the entropy of the universe (the system plus surroundings) must increase. This principle is fundamental in determining whether the entropy of the surroundings increases during a spontaneous process.