5. Kqfor HCN is 5x10-10 at 25°C. For maintainingconstant pH of 9, the

1.	5. Kqfor HCN is 5x10-10 at 25°C. For maintainingconstant pH of 9, the volume of 5 M KCNsolution required to be added to 10 ml of 2 MHCN solution is :(A) 4 ml(B) 7.95 ml(C) 2 ml(D) 9.3 ml.
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5. Kqfor HCN is 5x10-10 at 25°C. For maintainingconstant pH of 9, the volume of 5 M KCNsolution required to be added to 10 ml of 2 MHCN solution is :(A) 4 ml(B) 7.95 ml(C) 2 ml(D) 9.3 ml.

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