Question 1
Calculate the percentage of pyridine (C5H5N) that forms pyridinium ion, C5H6N+, in a 0.66 M aqueous solution of pyridine (Kb = 1.7 × 10–9).
◦
1.7 × 10–7 %◦
3.3 10–3 %◦
2.6 × 10–7 %◦
7.7 × 10–3 %◦
5.1 × 10–3 %Question 2
Calculate the pH of 0.283 M HNO3(aq).
◦
0.548◦
2.830◦
–1.137◦
13.717◦
1.262