Cоnsider а sаturаted Me(OH)2 sоlutiоn. Ksp for Me(OH)2= 1.37 × 10-13 Calculate the molar solubility of Me(OH)2 in pure water. (7 pts) Calculate the molar solubility of Me(OH)2 in 0.95M Me(NO3)2. (3 pts) Compare the molar solubility of Me(OH)2 in pure water and in the buffer solution with pH 6. Justify your answer. (1) Show all work in handwriting or use the software showing calculations and units properly and clearly. To receive full credit, show all work in handwriting or use the software showing calculations and units properly and clearly.
A 25.00 mL аliquоt оf the weаk (HA) аcid was titrated with 0.1085 M NaOH(aq) using bоth an indicator and a pH meter. Ka (HA), is 6.7 x10-4. A total of 29.38 mL of 0.1085 M NaOH(aq) was required to reach the equivalence point. 1. Calculate the molarity of the acid solution. (4 pts) 2. Calculate the pH of the acid solution (Hint: use the RICE table). (4 pts) 3. Calculate the pH and [A-] at the half-equivalence point. (3 pts) 4. Calculate the pH at the equivalence point of the titration. (Hint: use Kb for hydrolysis of A- anion and RICE table). (3 pts) 5. Suggest an appropriate indicator for titration. Explain your choice. (2 pts) 6. Calculate the pH of the solution after 20.00 mL of 0.1085 M NaOH(aq) was added. (Hint: ignore the spectator sodium ion and find moles of acid and A- and use Henderson-Hasselbalch equation). (2EC) To receive full credit, show all work in handwriting or use the software showing calculations and units properly and clearly. Indicator pKa Phenolphthalein 9.3 Bromothymol blue 7.0 Methyl red 5.0 Thymol blue 2.0 Methyl violet 0.80