A chemistry graduate student is given 500. m of a 0.70 pyridine (₅H₅) solution. Pyridine is a weak base with K=1.7×10⁻⁹* What mass of ₅H₅H should the student dissolve in the 5H5 solution to turn it into a buffer with pH=4.66 ?
You may assume that the volume of the solution doesn't change when the ₅H₅H is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits