First law of thermodynamics is expressed as:
Correct answer: D. All of the above
- A. q = △E + W
- B. △E = q - W
- C. q = △E - P△V
- D. All of the above
Explanation
The first Law of Thermodynamics is represented by the formula: ΔE = q − W. Where, E=Internal energy, q=heat transfer, W=work done, this can be rearranged to be written as: q= ΔE+WW = PΔV, thus it can be written as q= ΔE + PΔV
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About First Law of Thermodynamics
The first law states that energy is conserved, so the change in a system's internal energy equals heat supplied plus work done on the system, ΔU = q + w. Questions use sign conventions, expansion and compression work, state functions versus path functions, and the relation between internal energy and enthalpy.
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