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Question
Write mathematical equation of first law of thermodynamics for the following processes :
Adiabatic process.
Solution
The mathematical expression for the first law of thermodynamics is,
ΔU = q + w
When ΔU = change in energy
q = heat absorbed by the system
w = Amount of work done
Adiabatic Process : A process in which heat is not allowed to enter or leave the system at any stage the process is called adiabatic process.
∴ q = 0
The mathematical expression for first law of thermodynamics is,
ΔU = q + w
∴ ΔU = + w
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