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Chapter 17: Problem 49

For each statement, indicate whether it is true or false. (a) The solubility of a slightly soluble salt can be expressed in units of moles per liter. (b) The solubility product of a slightly soluble salt is simply the square of the solubility. (c) The solubility of a slightly soluble salt is independent of the presence of a common ion. (d) The solubility product of a slightly soluble salt is independent of the presence of a common ion.

Short Answer

Expert verified
Short Answer: (a) True, the solubility of a slightly soluble salt can be expressed in units of moles per liter (M). (b) False, the solubility product of a slightly soluble salt is the product of the molar concentrations of its ions in a saturated solution, each raised to the power of their stoichiometric coefficients. It is only the square of the solubility if the salt has a 1:1 stoichiometric ratio. (c) False, the solubility of a slightly soluble salt is influenced by the presence of a common ion due to the common ion effect and Le Chatelier's principle. (d) True, the solubility product (Ksp) of a slightly soluble salt is a constant value for a given salt at a particular temperature and is independent of the presence of a common ion.

Step by step solution

01

Statement (a)

This statement is true. The solubility of a slightly soluble salt can be expressed in units of moles per liter (M). Solubility refers to the maximum amount of solute that can dissolve in a given amount of solvent at a specific temperature to produce a saturated solution.
02

Statement (b)

This statement is false in general. The solubility product (Ksp) of a slightly soluble salt is the product of the molar concentrations of its ions in a saturated solution, each raised to the power of their stoichiometric coefficients. However, if the salt has a 1:1 stoichiometric ratio (e.g., AB), then the solubility product is the square of the solubility.
03

Statement (c)

This statement is false. According to the common ion effect, the solubility of a slightly soluble salt is influenced by the presence of a common ion. When a common ion is present, the solubility of the salt is decreased due to the shift in the equilibrium according to Le Chatelier's principle.
04

Statement (d)

This statement is true. The solubility product (Ksp) of a slightly soluble salt is a constant value for a given salt at a particular temperature. The presence of a common ion will not affect the solubility product; instead, it will affect the solubility of the salt.

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Most popular questions from this chapter

The solubility-product constant for barium permanganate, \(\mathrm{Ba}\left(\mathrm{MnO}_{4}\right)_{2},\) is \(2.5 \times 10^{-10}\) . Assume that solid \(\mathrm{Ba}\left(\mathrm{MnO}_{4}\right)_{2}\) is in equilibrium with a solution of \(\mathrm{KMnO}_{4} .\) What concentration of \(\mathrm{KMnO}_{4}\) is required to establish a concentration of \(2.0 \times 10^{-8} \mathrm{M}\) for the \(\mathrm{Ba}^{2+}\) ion in solution?

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