One mole of an ideal gas at 350 K is in a 2.0 L vessel of thermally conducting walls, which are in contact with the surroundings. It undergoes…

One mole of an ideal gas at $\displaystyle 350$ K is in a $\displaystyle 2.0$ L vessel of thermally conducting walls, which are in contact with the surroundings. It undergoes isothermal reversible expansion from 2.0L to 3.0L against a constant pressure of $\displaystyle 4$ atm . The change in entropy of the surroundings $\displaystyle (\Delta S)$ is $\displaystyle \_\_\_\_$ $\displaystyle \mathrm{J} \mathrm{K}^{-1}$ (Nearest integer) Given: $\displaystyle \mathrm{R}=8.314 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$.