. 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 10mL of 2M HCN solution
is-
(1) 4 mL
(2) 7.95 mL
(3) 2 mL
(4) 9.3 mL
Answers
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Answer:Correct option (c) 2 mL
Explanation:
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