See image β AITS & Test Series Chemistry Question
Question
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Answer: 2
π‘ Solution & Explanation
It will form buffer solution Let V ml of KCN is added, the total volume = V + 10 ml ο ο ο ο ο ο ο ο a 20 5V HCN , KCN V 10 V 10 KCN pH pk log HCN 5V 9
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