An ideal gas is taken in a thermally insulated container to expand in vacuum. Given the number of parameters/quantities out of the following, how many will be zero?

$Δ U, Δ H, q, W, Δ S_{system}, Δ S_{surrounding}$

(Assuming that gas is not showing association or dissociation)

Question

An ideal gas is taken in a thermally insulated container to expand in vacuum. Given the number of parameters/quantities out of the following, how many will be zero?

$Δ U, Δ H, q, W, Δ S_{system}, Δ S_{surrounding}$

(Assuming that gas is not showing association or dissociation)

TestHub · Accepted Answer

Adiabatic free expansion ⇒ q = W = Δ U = Δ H = Δ S surr ​ = 0

Chemistry - Thermodynamics - II Question with Solution | TestHub

Doubts & Discussion

JEE Main (2028)