ShahinF8592 ShahinF8592

06-03-2024
Mathematics

contestada

The pKb of cyanide ion is 4.7. The pH of a solution prepared by mixing 2.5 moles of KCN and 2.5 moles of HCN in water and making the total volume up to 500 ml is:
A. 4.0
B. 4.7
C. 5.0
D. 5.3

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