24. A solution is saturated with CaF, in a pH 5.00 buffer. Which is the correct mass balance relationship? (A) [Ca2+] =

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: 24 A Solution Is Saturated With Caf In A Ph 5 00 Buffer Which Is The Correct Mass Balance Relationship A Ca2 1 (24.2 KiB) Viewed 21 times

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24. A solution is saturated with CaF, in a pH 5.00 buffer. Which is the correct mass balance relationship? (A) [Ca2+] = 2[F] (B) 2[Ca2+] + [H3O+] = [OH-] + [F] (C) [Ca2+] = 2[F] + 2[HF] (D) 2[Ca2+] = [F] + [HF]
13. Which does not affect the solubility (in g.L-') of an insoluble salt in a solution ? (A) the number of grams of the salt placed in the solution (B) the temperature of the solution (C) the ionic strength of the solution (D) the presence in the solution of an ion common to the insoluble salt
a 11. A 25.00-mL volume of 0.1000 M HCl solution is added to 25.00 mL of a NaOH solution of unknown concentration. The resulting solution requires 10.00 mL of 0.05000 M NaOH to back titrate to a phenolphthalein endpoint. What is the molarity of NaOH in the unknown? (A) 0.1000 M (B) 0.2000 M (C) 0.08000 M (D) 0.1800 M