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A saturated solution of the silver salt of a monobasic acid HA has pH 9. If the acid dissociation constant of HA is 10⁻¹⁰, what is the solubility product constant of the sparingly soluble salt AgAs?
- 1.1 × 10⁻⁹
- 1.1 × 10⁻¹⁰
- 1.1 × 10⁻¹¹
- 10⁻¹²
Correct answer: 1.1 × 10⁻¹¹
Solution
The solubility product constant (Ksp) can be determined using the pH to find the concentration of hydroxide ions, which helps in calculating the concentration of the silver ions and the corresponding dissociation of the acid. Given the pH of 9, the concentration of hydroxide ions is 10⁻⁵ M, leading to the conclusion that the Ksp for the silver salt is 1.1 × 10⁻¹¹.
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