Textbook Question
Write balanced equations and expressions for Ksp for the dissolution of each ionic compound. a. BaSO4
Ch.17 - Aqueous Ionic Equilibrium
Chapter 17, Problem 86
Write balanced equations and expressions for Ksp for the dissolution of each ionic compound. a. CaCO3 b. PbCl2 c. AgI
Verified step by step guidance1
For each ionic compound, write the balanced dissolution equation.
For CaCO_3, the dissolution equation is: CaCO_3 (s) \rightleftharpoons Ca^{2+} (aq) + CO_3^{2-} (aq).
For PbCl_2, the dissolution equation is: PbCl_2 (s) \rightleftharpoons Pb^{2+} (aq) + 2Cl^{-} (aq).
For AgI, the dissolution equation is: AgI (s) \rightleftharpoons Ag^{+} (aq) + I^{-} (aq).
Write the expression for K_{sp} for each compound based on the dissolution equations.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Solubility Product Constant (Ksp)
The solubility product constant (Ksp) is an equilibrium constant that applies to the solubility of ionic compounds in water. It represents the maximum concentration of ions that can exist in a saturated solution at a given temperature. Ksp is calculated from the concentrations of the ions in solution, raised to the power of their coefficients in the balanced dissolution equation.
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Solubility Product Constant
Dissolution of Ionic Compounds
The dissolution of ionic compounds involves the separation of the compound into its constituent ions when it is added to water. This process can be represented by a balanced chemical equation, where the solid ionic compound is shown breaking down into its ions, which then enter the solution. Understanding this process is crucial for writing the correct Ksp expressions.
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Balancing Chemical Equations
Balancing chemical equations is essential for accurately representing the conservation of mass in a chemical reaction. In the context of dissolution, it involves ensuring that the number of atoms of each element is the same on both sides of the equation. This step is critical for deriving the correct Ksp expression, as the coefficients in the balanced equation determine the powers to which the ion concentrations are raised.
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Related Practice
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Write balanced equations and expressions for Ksp for the dissolution of each ionic compound. b. PbBr2
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Refer to the Ksp values in Table 17.2 to calculate the molar solubility of each compound in pure water. a. MX (Ksp = 1.27⨉10-36) b. Ag2CrO4 c. Ca(OH)2