8 Multiple Choice 1 point Question at position 8 A 20.00 mL sample of 0.150 M NH3 is titrated with 0.200 M HCl. What is the pH after 0.00 mL of HCl has been added? Hint: The Kb of NH3 is 1.8 x 10-5. 0.82 2.80 11.20 13.18 Question at position 9 9 Multiple Choice 1 point Question at position 9 A 20.00 mL sample of 0.150 M NH3 is titrated with 0.200 M HCl. What is the pH after 5.00 mL of HCl has been added? Hint: The Kb of NH3 is 1.8 x 10-5. 8.95 4.44 5.04 9.56 Question at position 10 10 Multiple Choice 1 point Question at position 10 A 20.00 mL sample of 0.150 M NH3 is titrated with 0.200 M HCl. What is the pH after 7.50 mL of HCl has been added? Hint: The Kb of NH3 is 1.8 x 10-5. 9.26 2.82 11.18 4.74