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What is the ka reaction of hcn? the ka of hcn is 6.2 × 10-10. what is kb value for cn– at 25°c?

Ashley Howard

in Chemistry

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Amanda Johnson on March 19, 2018

The Ka reaction for HCN: HCN(aq) + H₂O(l) ⇄ CN⁻(aq) + H₃O⁺(aq) or HCN(aq) ⇄ CN⁻(aq) + H⁺(aq).Ka(HCN) = 6,2·10⁻1⁰.Ka · Kb = Kw, the ion product of water.6,2·10-1 ⁰ mol/dm3 · Kb = 1·10⁻1⁴ mol2/dm⁶; the ion product of water at 25°C. Kb(CN⁻) = 1·10⁻1⁴ mol2/dm⁶ ÷ 6,2·10-1 ⁰ mol/dm3.Kb(CN⁻) = 1,6·10⁻⁵ mol/dm3.


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