Which of the group I chlorides has the lowest molar solubility? What is its solu

Question

Which of the group I chlorides has the lowest molar solubility? What is its solubility in moles/L? Hydrogen sulfide undergoes successive dissociations to give the sulfide ion, S^2-. The equilbrium constant for the overall process is: K = 1 times l0^-20 = [H+]^2 [S^2-]/[H_2 S] A saturated solution of hydrogen sulfide is about 0.1 M and this value is not affected by changes in pH. (a) What is the [S^2-] for a solution saturated with hydrogen sulfide at pH = 3.0? (b) What is the [S^2-] for a solution saturated with hydrogen sulfide at pH = 11.0? (c) Which of the metal sulfides in the table in this experiment would be soluble at pH 3? (d) Are any of the metal sulfide salts listed in the Table in the beginning of the experiment soluble at pH 10? Could you forsee difficulty in quantitative analysis of your unknown ion in aqueous solution or ions by weighing the precipitate? Explain why or why not in quantitative terms.

Explanation / Answer

The greater the charge density of an ion the more water molecules it can attract around it self. So by this logic CsI should be least soluble.Its solubility is 1.3 x10-4 mol/L

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