Explain why the temperature of a gas drops in an adiabatic expansion, on basis of the kinetic theory of gases,

Explain why the temperature of a gas drops in an adiabatic expansion,

1.	Explain why the temperature of a gas drops in an adiabatic expansion, on basis of the kinetic theory of gases,
Answer» In an adiabaticf expansion `Delta Q = 0`. But `Delta Q = Delta U = + Delta W` by the first law of thermodynamics. Therefore, in an adiabatic expanison, `Delta W = - Delta U` Thus, work down by a gas in an adiabatic expanison is associated with a decrease of internal energy. So its temperature decreasese.

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Explain why the temperature of a gas drops in an adiabatic expansion, on basis of the kinetic theory of gases,

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