When the initial state and the final state are fixed, "the sum of work and heat" is the state function.
举一反三
- When a system moves from A state along path I to B state, it releases heat of 100 J and obtains 50 J work at the same time; when the system does 80J work from A state along path Ⅱ to B state, then Q is（ ） A: 70J B: 30J C: －30J D: －70J
- Which one is not a state function? A: Enthalpy B: Internal energy C: Entropy D: Work/Heat
- Which of the following is not a state function? A: Internal energy B: Free energy C: Work D: Enthalpy
- When<br/>the substance is measured by atomic absorption spectrophotometry, the<br/>state of the substance is ( ) A: Solid<br/>state B: Liquid C: Vapor<br/>state D: Supercritical<br/>state
- The final step in Lewin's three-step description of the change process is ________. A: freezing the new state B: unfreezing the status quo C: changing to a new state D: unfreezing the new state