The percentage of pyridine (C5H5N) that forms pyridinium ion (C5H5N+H) ina 0.10 M aqueous pyridine solution (Kb for C5H5N = 1.7 $ \times $ 10$-$9) is

Question

The percentage of pyridine (C₅H₅N) that forms pyridinium ion (C₅H₅N⁺H) ina 0.10 M aqueous pyridine solution (K_b for C₅H₅N = 1.7 $ \times $ 10^$-$9) is

0.0060%