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CBSE Class 11-science Answered

equations of thermodynamics that occurs in the lesson
Asked by Chandana | 09 Aug, 2012, 09:25: PM
answered-by-expert Expert Answer

First Law of Thermodynamics:Euniv = Esys + Esurr = 0 

Esys = q + w
 

w = - PV

The sign convention for this equation reflects the fact that the internal energy of the system decreases when the system does work on its surroundings.

Esys = q (if and only if w = 0)
 
Hsys = Esys + PV
 
H = E + PV
Answered by | 10 Aug, 2012, 04:38: PM
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