You wish to prepare a buffer solution containing NaN3 and HN3 (hydrazoic acid). You have to prepare the solutions first.
a. 187 g of sodium azide is dissolved in water to make a solution with a final volume of 1.0L. What is the concentration and pH of the solution?
b. What is the molarity a solution made by adding 120.0 mL of a 6.0 M HN3(aq) to water to a final volume of 250.0 mL?
c. What volume of the HN3(aq) made in part b is needed to add to 100.0 mL of the NaN3(aq) solution of made in part a to make a buffer at pH= 5.00?