JEE Main 2021 · 24 Feb · Shift 1, Chemistry question 54

For the reaction A$_{(g)}$ → B$_{(g)}$, the value of the equilibrium constant at 300 K and 1 atm is equal to 100.0. The value of Δ$_r$G for the reaction at 300 K and 1 atm in J mol$^{-1}$ is −xR, where x is _______. (Rounded off to the nearest integer)

[R = 8.31 J mol$^{-1}$K$^{-1}$ and ln 10 = 2.3]