ThermodynamicsMedium

Question

An ideal gas is allowed to expand freely against a vacuum in a rigid insulated container. The gas undergoes:

Options

A.an increase in its internal energy

B.a decrease in its internal energy

C.neither an increase nor decrease in temperature or internal energy

D.an increase in temperature

Solution

For free expansion
ᐃU = 0 or ᐃT = 0
∴ U or T = const

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