#### Question

Write mathematical equation of first law of thermodynamics for Adiabatic process

#### Solution

Adiabatic process:

In an adiabatic process, there is no exchange of heat between the system and its surroundings, i.e. q = 0.

Therefore, the equation

`triangle U=q+W`

Becomes

`triangle U=W or-triangle U=-W`

The above equation indicates that the increase in internal energy of the system is due to the work done on it by the surroundings or that the work done by the system on the surroundings is at the expense of the system’s internal energy which decreases in the process.

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