Determine Solubility of Silver Chromate (Ag2CrO4) in water at 25'C Ksp=2.2E-12?
回答 (1)
2017-07-15 4:26 pm
Let s M be the solubility of Ag₂CrO₄.
______________ Ag₂CrO₄(s) ⇌ 2Ag⁺(aq) + CrO₄²⁻(aq) …… Ksp = 2.2 × 10⁻¹²
At equilibrium: ______________ 2s M _____ s M
Ksp = [Ag⁺]² [CrO₄²⁻]
(2s)² s = 2.2 × 10⁻¹²
4s³ = 2.2 × 10⁻¹²
s³ = (2.2 × 10⁻¹²) / 4
s = 8.2 × 10⁻⁵
The solubility of Ag₂CrO₄ in water at 25°C = 8.2 × 10⁻⁵ M
______________ Ag₂CrO₄(s) ⇌ 2Ag⁺(aq) + CrO₄²⁻(aq) …… Ksp = 2.2 × 10⁻¹²
At equilibrium: ______________ 2s M _____ s M
Ksp = [Ag⁺]² [CrO₄²⁻]
(2s)² s = 2.2 × 10⁻¹²
4s³ = 2.2 × 10⁻¹²
s³ = (2.2 × 10⁻¹²) / 4
s = 8.2 × 10⁻⁵
The solubility of Ag₂CrO₄ in water at 25°C = 8.2 × 10⁻⁵ M
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