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Discussion

Preparation for Medical Entrance exams - Biology, Physics and Chemistry
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A solution is prepared by mixing 2.5 moles of KCN and 2.5 moles of HCN in water by keeping volume up to 500 ml. If the pKa value of HCN is 9.30, then the pH of resulting solution is

 
10.30
9.30
8.30
7.30

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Vinod Kumar

Please provide the simplified explaination of this question