An ideal gas expands adiabatically against vaccum. Which of the following is correct for the given process?

An ideal gas expands adiabatically against vaccum. Which of the following is correct for the given process?
  1. $\Delta S=0$
  2. $\Delta \mathrm{T}=-\mathrm{ve}$
  3. $\Delta \mathrm{U}=0$
  4. $\Delta \mathrm{P}=0$

Solution

Hint:
For adiabatic free expansion of an ideal gas
$\mathrm{dq}=0$
$\mathrm{dU}=0$
$\mathrm{dH}=0$
$\mathrm{dT}=0$ ^

Asked in: JEE-TOPICTESTS-CHEMISTRY

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