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Cyanic acid, HCNO, is a weak acid with the following equilibrium: HCNO(aq) + H2O(l) ⇌ CNO-(aq)...

Cyanic acid, HCNO, is a weak acid with the following equilibrium:

HCNO(aq) + H2O(l) ⇌ CNO-(aq) + H3O+(aq)

In a 0.200 M aqueous solution of HCNO, the concentration of H3O+ is 6.50 x 10-3M.

The equilibrium constant (Kc) for this reaction is

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