A 25.0 mL sample of 0.150 M hydrazoic acid is titrated with a 0.150 M NaOH solution. What is the pH after 26.0 mL of base is added? The K_a of hydrazoic acid is 1.9 × 10^-5. A)2.54 B)11.47 C)7.00 D)4.70 E)4.74

Question

Quizplus · Accepted Answer

After adding 26.0 mL of 0.150 M NaOH to 25.0 mL of 0.150 M hydrazoic acid, there is an excess of 1.0 mL of NaOH, making the solution basic. Calculate the concentration of OH- and then the pH.

A 250 ML Sample of 0