Question 1
A 50.00-mL solution of 0.0423 M acetic acid (Ka = 1.8 × 10–5) is titrated with a 0.0249 M solution of sodium hydroxide as the titrant. What is the pH of at the equivalence point? (Kw = 1.00 × 10–14)
◦
8.47◦
5.53◦
4.74◦
10.73◦
9.26Question 2
A 50.00-mL solution of 0.0680 M trimethylamine (Kb = 6.5 × 10–5) is titrated with a 0.0153 M solution of hydrochloric acid as the titrant. What is the pH of the base solution after 20.82 mL of titrant have been added? (Kw = 1.00 × 10–14)
◦
11.32◦
12.83◦
4.19◦
10.74◦
3.26