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noslengerman
27.12.2019 •
Chemistry
Calculate the solubility (in m) of cobalt(ii) hydroxide, co(oh)2(s) in h2o. ksp = 1.10×10-16 at a specific temperature.
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Ответ:
3.018 x 10⁻⁶ M.
Explanation:
Co(OH)₂ dissociates in solution according to the equation:Co(OH)₂ → Co²⁺ + 2OH⁻.
∵ Ksp = [Co²⁺][OH⁻]² = (s)(2s)² = 4s³.
∴ 4s³ = 1.10 x 10⁻¹⁶.
∴ s³ = 1.10 x 10⁻¹⁶/4 = 2.75 x 10⁻¹⁷.
∴ s = ∛(2.75 x 10⁻¹⁷) = 3.018 x 10⁻⁶ M.
Ответ:
Filtration,Sedimentation and distillation
Explanation:
These 3 are physical processes which are commonly used in nature while in chemical processes,Chlorination is done to eliminate bacteria and other germs present
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