Physical significance of Enthelpy

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Enthalpy is a state function that combines internal energy with pressure-volume work, making it useful for various calculations. While it lacks specific physical significance in processes without constant pressure, it simplifies the analysis of temperature effects on phase and chemical equilibria. Enthalpy is particularly valuable for energy balances in steady-state industrial systems like reactors and heat exchangers. Understanding its utility develops over time with practical application. Overall, enthalpy serves as a crucial tool in thermodynamics and process engineering.
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what is Physical significance of Enthalpy for a process where we don't have pressure constant
 
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Shreyas Samudra said:
what is Physical significance of Enthalpy for a process where we don't have pressure constant
The enthalpy is a state function defined in terms of the internal energy and PV. It has no special physical significance, but is very convenient to work with in many kinds of problems. It is particularly convenient for quantifying the effect of temperature on the conditions for phase equilibrium and chemical equilibrium. It is also very convenient to work with in doing energy balances on industrial processing systems operating at steady state, such as chemical reactors, heat exchangers, distillation towers, compressors, absorbers, etc. Please just be patient and, as time progresses, you will get a good appreciation for its utility.

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