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1 mole of an ideal gas is expanded from ...

1 mole of an ideal gas is expanded from an initial pressure of 1 bar to final pressure of 0.1 bar at constant temperature of 273 K. Predict which of the following is not true?

A

`DeltaE=0`

B

`DeltaH=0`

C

PV is constant

D

`DeltaS lt 0`

Text Solution

Verified by Experts

The correct Answer is:
D
`DeltaU =0` (for isothermal process)
`DeltaH=0`
`therefore pv` = constant `DeltaS = nR ln (V_(2)/V_(1))`
`DeltaS gt 0` for isothermal expansion.
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