#### 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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Write mathematical equation of first law of thermodynamics for Adiabatic process Concept: Chemical Thermodynamics and Energetic - First Law of Thermodynamics.

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