Question

14. The dissociation constant of HCN is 5 x 10-10. The pH
of the solution prepared by mixing 1.5 mole of HCN
and 0.15 moles of KCN in water and making up the
total volume to 0.5 dm³ is
(a) 7.302 (b) 9.302 (c) 8.302 (d) 10.302
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Answer 1

Answer:

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