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Write the Mathematical Expression of the First Law of Thermodynamics for The Isobaric Process - Chemistry

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Write the mathematical expression of the First Law of Thermodynamics for the Isobaric process

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Solution 1

Condition: P= constant hence q=qp

Mathematical expression of the first law : 

`Delta "U" = "qp" + "W"`

`Delta "U" = "qp" - "P"_("ex") Delta"V"["W" = -"P"_("ex")Delta "V"]` or `["qp" = Delta"U" + "P
_("ex")Delta "V"]`

Solution 2

The mathematical expression of first law of thermodynamics for an isothermal process is:

W = – Q or – W = Q

Concept: First Law of Thermodynamics
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SCERT Maharashtra Question Bank 12th Standard HSC Chemistry Maharashtra State Board 2021
Chapter 4 Chemical Thermodynamics
Very short answer questions | Q 4
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