Ionic EquilibriumHard
Question
HCN is weak acid (Ka = 4.0 × 10-4). Which statements is not true for an aqueous solution of hydrocyanic acid ?
Options
A.Its precent dissociation increases as solutions are made more dillute.
B.In a 1 M solution of HCN, the HCN is approximately 2 % dissociated.
C.The ionisation constant Ka varies dramatically over a change of concentration of HCN.
D.None of these
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