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Ch.17 - Aqueous Ionic Equilibrium
Tro - Chemistry: A Molecular Approach 4th Edition
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoTro 4th EditionCh.17 - Aqueous Ionic EquilibriumProblema 85a
Capitolo 17, Problema 85a

Write balanced equations and expressions for Ksp for the dissolution of each ionic compound. a. BaSO4

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Write the dissolution equation for barium sulfate (BaSO4). In this equation, solid barium sulfate dissociates into its ions in aqueous solution.
Identify the ions formed from the dissolution of BaSO4. Barium sulfate dissociates into barium ions (Ba2+) and sulfate ions (SO42-).
Write the balanced chemical equation for the dissolution. Since barium sulfate is a 1:1 compound of barium ions and sulfate ions, the equation will reflect this stoichiometry: BaSO4(s) \( \rightarrow \) Ba2+(aq) + SO42-(aq).
Write the expression for the solubility product constant (Ksp). Ksp expressions are written by multiplying the concentrations of the ions, each raised to the power of their stoichiometric coefficients in the balanced equation.
The final expression for Ksp of BaSO4 is: Ksp = [Ba2+][SO42-]. This expression indicates the product of the molar concentrations of barium and sulfate ions in a saturated solution of barium sulfate.

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Solubility Product Constant (Ksp)

The solubility product constant (Ksp) is an equilibrium constant that applies to the solubility of ionic compounds. It quantifies the extent to which a compound can dissolve in water, represented by the product of the molar concentrations of its ions, each raised to the power of their coefficients in the balanced dissolution equation. A higher Ksp value indicates greater solubility.
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01:47
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. For example, when barium sulfate (BaSO4) dissolves, it dissociates into barium ions (Ba²⁺) and sulfate ions (SO₄²⁻). This process is reversible and establishes an equilibrium between the solid and the dissolved ions.
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Ionic Compounds Naming

Balanced Chemical Equations

A balanced chemical equation represents a chemical reaction with equal numbers of each type of atom on both sides of the equation. For the dissolution of BaSO4, the balanced equation is BaSO4 (s) ⇌ Ba²⁺ (aq) + SO₄²⁻ (aq). Balancing ensures the law of conservation of mass is upheld, which is essential for accurately describing chemical processes.
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Balancing Chemical Equations
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