The correct option for free expansion of an ideal gas under adiabatic condition is

The correct option for free expansion of an ideal gas under adiabatic condition is

$q = 0, ΔT < 0$ and $w > 0$
$q < 0, ΔT = 0$ and $w = 0$
$q > 0, ΔT > 0$ and $w > 0$
$q = 0, ΔT = 0$ and $w = 0$

Solution

Free expansion of ideal gas

$P_{ext} = 0$

$w_{pv} = 0$

$q = 0$ (adiabatic process)

$ΔE = q + w$

$ΔE = 0$

$ΔE = {nC}_{V} ΔT = 0$

$q = 0, ΔT = 0, w = 0$

Asked in: NEET 2020 (Phase 1)

Practice more Chemical Thermodynamics questions on Aicharya