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Question
In an adiabatic process, no transfer of heat takes place between system and surroundings. Choose the correct option for free expansion of an ideal gas under adiabatic condition from the following.
Options
q = 0, ∆T ≠ 0, w = 0
q ≠ 0, ∆T = 0, w = 0
q = 0, ∆T = 0, w = 0
q = 0, ∆T < 0, w ≠ 0
Solution
q = 0, ∆T = 0, w = 0
Explanation:
In free expansion, w=0 because volume is constant, as the process is adiabatic q = 0 and from first law of thermodynamics.
ΔU = q + w
This means that internal energy remains constant.
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