Problem- state a solution containing 5000 ml of 01800 m nh3

Question

Problem- State A solution containing 50.00 mL of 0.1800 M NH3 (Kb = 1.8 10-5) is being titrated with 0.3600 M HCl.
Compute the pH

1) Initially

2) After the addition of 5.00 mL of HCl

3) After the addition of a total volume of 12.50 mL of HCl

4) After the addition of a total volume of 25.00 mL of HCl

5) After the addition of 26.00 mL of HCl

Provide complete solution