Question 1
A 50.00-mL sample of 0.100 M KOH is titrated with 0.171 M HNO3. Calculate the pH of the solution after 52.00 mL of HNO3 is added.
◦
12.58◦
1.06◦
1.42◦
12.94◦
None of these are correct.Question 2
A 50.00-mL sample of a 1.00 M solution of the diprotic acid H2A (Ka1 = 1.0 × 10–6 and Ka2 = 1.0 × 10–10) is titrated with 2.00 M NaOH. How many mL of 2.00 M NaOH must be added to reach a pH of 10?
◦
0 mL◦
12.5 mL◦
25.0 mL◦
37.5 mL◦
None of these are correct.