Which of the following statements is NOT true for the first law of thermodynamics?
Correct answer: D. Total energy of the system is increasing
- A. Total energy of the system and surroundings is conserved
- B. Energy can neither be created nor destroyed
- C. The first law is synonymous with the law of conservation of energy
- D. Total energy of the system is increasing
Explanation
The first law of thermodynamics, also known as the law of conservation of energy, asserts that the total energy within an isolated system is constant. Energy may be transformed from one form to another or transferred between the system and its surroundings, but it cannot be created or destroyed. Therefore, the statement in Option D is incorrect as it contradicts this fundamental principle by suggesting that the total energy of the system is increasing.Options A, B, and C correctly reflect the principles of the first law of thermodynamics, emphasizing the conservation of energy and its equivalence to the law of conservation of energy.
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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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