For a real gas at $25^{\circ} \mathrm{C}$ temperature and high pressure (99 bar) the value of compressibility factor is 2, so the value of Vander Waal's constant 'b' should be __________ $\times 10^{-2} \mathrm{~L} \mathrm{~mol}^{-1}$ (Nearest integer)

(Given $\mathrm{R}=0.083 \mathrm{~L}$ bar $\mathrm{K}^{-1} \mathrm{~mol}^{-1}$)