A) Does the pH increase, decrease or remain the same on theaddition of the of the following?
|     -     A.    B.     C.  | LiF to and HF solution | |     -     A.    B.     C.  | KI to and HI solution | |     -     A.    B.     C.  | NH4Cl to and NH3 solution | |     -     A.    B.     C.  | HBr to an CH3COO-/CH3COOH(acetic acid/acetate buffer) solution |
| | A. | Decrease | | B. | Remain the same | | C. | Increase |
|
B) Which of the following (select all thatapply) gives a buffer solution when equal volumes of thetwo solutions are mixed?
| | 0.10 M HF and 0.10 M NaF |
| | 0.10 M HF and 0.10 M NaOH |
| | 0.50 M HF and 0.25 M NaOH |
| | 0.25 M HCl and 0.50 M NaF |
