how much volume be added to get pk of the acid 5 mL 4 100 mL ALLEN 117 K for HCN is 5 x 10 10 at 25 C For maintaining a constant

Question

how much volume be added to get pk of the acid 5 mL 4 100 mL ALLEN 117 K 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 10mL of 2M HCN solution is 1 4 mL 2 7 95 mL

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