5- Given the following table of Ksp values, determine which compound listed has

Question

5- Given the following table of Ksp values, determine which compound listed has the greatest solublity. Cadmium (II) carbonate Cadmium (Il) hydroxide Silver (I) lodide Iron (IIl) hydroxide Zinc (II) carbonate 5.2 x 1012 2.5 x 10-14 8.3 x 10-17 4.0 x 10 1.4 x 1011 c. Silver () lodide d. Iron (Il) a. Cadmium (lI) carbonate b. Cadmium (Il) hydroxide hydroxide e. Zinc (Il) carbonate 6- 0.012 moles of sodium sulphate are added to 400 ml of each of two solutions. One solution contains 1.5 x 10 M barium chloride; the other contains 1.5 x 10 M calcium chloride. Glven that Ksp for barium sulphate = 1.5 x 10° and Ksp for calcium sulphate 6.1 x 10s Which of the following is true? a) Barium sulphate would precipitate but calcium sulphate would not b) calcium sulphate would precipitate but barium sulphate would not c) Both barium sulphate and calcium sulphate would precipitate d) Neither barium sulphate nor calcium sulphate would precipitate e) Not enough information is given to determine if precipitation would occur. (5

Explanation / Answer

5) Solubility product (Ksp) is directly related to the solubility of a sparigly soluble salt in aqueous medium. In otherwords, it defines the degree of ionization of the salt in water. So more is the value of solubility product(Ksp), more becomes the solubility of the salt. In this line, Zinc(II) carbonate having relatively higher value of solubility product has higher solubility(Ksp).

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