MHT CET 2024 Chemistry question
A buffer solution is prepared by mixing 0.01 M HCN and 0.02 M NaCN, if Ka for HCN is What is the concentration of ions in solution ?
Answer: (B)
Solution
HCN (weak acid) and its salt NaCN form an acidic buffer. By the Henderson-Hasselbalch relation, , which is equivalent to . Substituting, H^+$}] =
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