Question 1
Calculate the [H+] in a solution that is 0.20 M in NaF and 0.25 M in HF. (Ka = 7.2 × 10–4)
◦
7.2 × 10–4M◦
1.2 M◦
9.0 × 10–4M◦
0.20 M◦
5.8 × 10–4MQuestion 2
Calculate the pH at the equivalence point for the titration of 1.0 M ethylamine, C2H5NH2, by 1.0 M perchloric acid, HClO4. (pKb for C2H5NH2 = 3.25)
◦
6.05◦
2.24◦
5.53◦
2.09◦
5.38