$1$ mole of a diatomic ideal gas at $25°\mathrm{C}$ is subjected to expand reversibly and adiabatically to ten times of its initial volume. Calculate the change in entropy during expansion (in ${\mathrm{JK}}^{-1}{\mathrm{mol}}^{-1}$)

Calculate the entropy change $(\mathrm{J}/\mathrm{mol} \mathrm{K})$ of the given reaction. The molar entropies $(\mathrm{J}/\mathrm{mol} \mathrm{K})$are given in brackets after each substance.

$2\mathrm{PbS}\left(\mathrm{s}\right)[91.2] + 3{\mathrm{O}}_2\left(\mathrm{g}\right) [205.1] \to 2\mathrm{PbO}\left(\mathrm{s}\right) [66.5] + 2{\mathrm{SO}}_2\left(\mathrm{g}\right) [248.2]$