Fewpal
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The ionization constant of HF, HCOOH and HCN at 298K are 6.8 × 10–4 , 1.8 × 10–4 and 4.8 × 10–9 respectively. Calculate the ionization constants of the corresponding conjugate base. 

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It is known that, 

Given, 

Ka of HF = 6.8 × 10–4 

Hence, Kb of its conjugate base F– 

Given, 

Ka of HCOOH = 1.8 × 10–4 

Hence, Kb of its conjugate base HCOO– 

Given, 

Ka of HCN = 4.8 × 10–9 

Hence, Kb of its conjugate base CN–

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