Question 1
A 0.365 M solution of the salt NaA has a pH of 8.40. Calculate the Ka value of the acid HA.
◦
1.7 × 10–11◦
1.5 × 10–9◦
5.8 × 10–4◦
2.3 × 102◦
None of these are correct.Question 2
A 0.377-g sample of NaOH(s) is added to enough water to make 250.0 mL of solution. The pH of this solution is:
◦
1.424◦
0.424◦
11.974◦
12.576◦
None of these are correct.