Quinine is an alkaloid, or naturally occurring base used to treat malaria. A 0.05 1\1 solution of quinine has a pH of 9. 70 at 25° C. The basicity of alkaloids i due to a nitrogen atom that picks up protons from water in the same manner as ammonia does. The ${\mathrm{K}}_{\mathrm{b}}$of quinine is $(x\cdot y)\times {10}^{-ab}$. The value of $\text{'}\mathrm{xyab}\text{'}$ is : [Given: log 2 = 0.3] [For example: If ${\mathrm{K}}_{\mathrm{b}}$ is $4.2\times {10}^{-07}$ , then answer is 4207)