Heat exchange between the system and surroundings at constant volume is shown by the relation:
Correct answer: B. ΔE=(q)v
- A. ΔH= qv+ w
- B. ΔE=(q)v
- C. ΔH=(q)v
- D. ΔE=(q)v + PV
Explanation
Since we have a constant volume, it is safe to assume that no work is being done on the system, or by the system. Hence the change in Energy, E, of the system, would be equal to the heat supplied to the system, q, keeping the volume, v, constant.
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About First Law of Thermodynamics
The first law relates heat supplied, work done and the change in internal energy through energy conservation. Problems use sign conventions and apply the law to isothermal, adiabatic, isobaric and isochoric processes. Internal energy is a state function, while heat and work depend on the path followed.
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