This document contains the results of 10 chemistry problems involving pH calculations or titration experiments. It lists the initial and final pH values, equilibrium concentrations of reactants and products, and individual pH values calculated in parts a, b, c, etc. of each problem. The problems involve acids, bases, buffers and titration reactions.

1. TEMA 9.-
1. a) pH = 2,72; b) pH = 4,92
4. a) pH = 4,74; b) pH = 4,65; [CH3COOH]eq = 1,1 M; [CH3COO-
]eq = 0,9 M
5. a) pH = 9,17; b) pH = 9,17
6. pHINICIAL = 9,25; [NH4
+
]eq = 0,306 M; [NH3]eq = 0,04 M; pHFINAL = 8,37
7. a) pHINICIAL = 4,75; pHFINAL = 4,82; b) pHINICIAL = 4,75; pHFINAL = 4,65
8. pHINICIAL = 2,88; a) pH = 5,58; b) pH = 10,78; c) pH = 12,31
9. a) pH = 2,21; b) pH = 4,19; c) pH = 8,06; d) pH = 11,73
10. pH = 5,28