Question

Ka for HCN is 5 x 10-10 at 25°C. For maintaining a constant pH of 9, the volume of 5M KCN
solution required to be added to 10 ml of 2MHCN solution is
1) 4 ml 2) 7.95 ml 3) 2 ml
4) 9.3 ml
ANS:-2) 7.95 ml​

Answer 1

Answer:

so sorry bro idk

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