Mathematical expression for change in internal energy when no work done is involved:
Correct answer: B. ∆ E = qv
- A. ∆ E = q w
- B. ∆ E = qv
- C. ∆ E = q + P ∆ V
- D. ∆ E = qp
Explanation
At constant volume no work is done and the entire heat supplied is converted to internal energy ,thus option B is correct.
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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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