What Is the PH of a 0 A)462
B)8

Multiple Choice

What is the pH of a 0.30 mol L^-1 pyridine solution that has K_b = 1.9 × 10^-9? The equation for the dissociation of pyridine is below: $$\mathrm { C } _ { 5 } \mathrm { H } _ { 5 } \mathrm {~N} ( a q ) + \mathrm { H } _ { 2 } \mathrm { O } ( l ) \rightleftharpoons \mathrm { C } _ { 5 } \mathrm { H } _ { 5 } \mathrm { NH } ^ { - } ( a q ) + \mathrm { OH } ^ { - } ( a q )$$

A) 4.62
B) 8.72
C) 9.38
D) 10.38