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Which of the following equations is obtained on combining 1st and 2nd law of thermodynamics, for a system of constant mass ?
Chemical Engineeringmedium
dE = Tds – PdV
BdQ = CvdT + PdV
CdQ = CpdT + Vdp
DTds = dE – PdV
Correct Answer: A. dE = Tds – PdV
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