Common Ions and Buffer WS
1. Calculate the pH of a 0.100M HONH2 solution Kb = 1.1 x 10-8
2. Calculate the pH of a 0.100M HONH3Cl solution
3. Calculate the pH of pure water
4. Calculate the pH of a mixture containing 0.100M HONH2 and a 0.100M HONH3Cl
5. Calculate the percent ionization of the solution in question #1 and question #4
6. Calculate the pH if 0.020 mol of HCl is added to 1.0L of a 0.100M HONH2 solution
7. Calculate the pH if 0.020 mol of HCl is added to 1.0L of a 0.100M HONH3Cl solution
8. Calculate the pH if 0.020 mol of HCl is added to 1.0L of pure water
9. Calculate the pH if 0.020 mol of HCl is added to a mixture containing 0.100M HONH2 and a 0.100M
HONH3Cl
10. Calculate the pH if 0.020 mol of NaOH is added to 1.0L of a 0.100M HONH2 solution
11. Calculate the pH if 0.020 mol of NaOH is added to 1.0L of a 0.100M HONH3Cl solution
12. Calculate the pH if 0.020 mol of NaOH is added to 1.0L of pure water
13. Calculate the pH if 0.020 mol of NaOH is added to a mixture containing 0.100M HONH2 and a 0.100M
HONH3Cl
14. Which of the solutions (#1-#4) acts as a buffer. Justify your answer.