✓ Board-verified
Chemistry · 2026 · 4 marks
NEET 2026 · 21 June · Code 50 · Q59
Two moles of an ideal gas undergo free expansion from 10 L to 100 L at 300 K. The values of Δ S system and Δ S surroundings are ( R is universal gas…
Two moles of an ideal gas undergo free expansion from $\displaystyle 10$ L to $\displaystyle 100$ L at $\displaystyle 300$ K . The values of $\displaystyle \Delta \mathrm{S}_{\text {system }}$ and $\displaystyle \Delta \mathrm{S}_{\text {surroundings }}$ are
( $\displaystyle R$ is universal gas constant)
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle \Delta \mathrm{S}_{\text {system }}=4.606 \mathrm{R} ; \Delta \mathrm{S}_{\text {surroundings }}=0$
More from Thermodynamics
NEET (UG) 2026 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.