Question 1
A 50.00-mL solution of 0.0350 M hydrocyanic acid (Ka = 6.2 × 10–10) is titrated with a 0.0337 M solution of sodium hydroxide as the titrant. What is the pH of the acid solution after 15.00 mL of titrant have been added? (Kw = 1.00 × 10–14)
◦
1.46◦
5.33◦
8.82◦
10.61◦
9.21Question 2
A 50.00-mL solution of 0.0350 M piperidine (Kb = 1.3 × 10–3) is titrated with a 0.0171 M solution of hydrochloric acid as the titrant. What is the pH at the equivalence point? (Kw = 1.0 × 10–14)
◦
11.11◦
7.47◦
2.41◦
2.89◦
6.53