Isothermal process and Adiabatic process. - Vidyadip

Question

Isothermal process and Adiabatic process.

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Answer

Isothermal process:

In an isothermal process, the temperature of the system remains constant. $\Delta T=0$
In this process, the system exchanges heat with the surroundings. $Q \neq 0$ (Closed system)
The total internal energy of the system remains constant.
In this process, the system is not thermally isolated.
In this process, $Q=-W$ as $\Delta U=0$.
$\Delta H=0$.

Adiabatic process:

In an adiabatic process, the temperature of the system changes. $\Delta T \neq 0$
In this process, the system does not exchange heat with the surroundings. Q = 0 (Isolated system)
The total internal energy of the system changes. $\Delta U \neq 0$
In this process, the system is thermally isolated.
In this process, $W=\Delta U$.
$\Delta H \neq 0$.

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