The statement: energy of system and surrounding is conserved, is related to which law of thermodynamic?
Correct answer: A. 1st law
- A. 1st law
- B. 2nd law
- C. 3rd law
- D. None of these
Explanation
The statement reflects the 1st law of thermodynamics. The 1st law of thermodynamics, also known as the law of energy conservation, states that energy cannot be created or destroyed in an isolated system. It can only change forms or be transferred from one system to another or between a system and its surroundings. According to this law, the total energy of a closed system, which includes both the system and its surroundings, remains constant.
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About Thermochemistry and Energetics of Chemical Reactions
Thermochemistry measures energy changes in chemical reactions and distinguishes exothermic from endothermic processes. Work covers systems, surroundings and state functions, internal energy, the first law of thermodynamics, enthalpy and Hess's law, including the sign conventions used when heat enters or leaves a system.
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