Answer to Question #141089 in Physical Chemistry for M naved saqib

Question

Two containers, A and B, are separated by a tap. A has a volume of 15 litres and contains one mole
of helium at 25°C. B has a volume of 45 litres and is completely evacuated.
a. Calculate the change in entropy that occurs when the tap is opened.

Answer 1

$\Delta$ S = n*R*ln(V₂/V₁) = 1*8.314*ln(60/15) = 11.5 J/(mol*K)