What is the pH of a 2.62 x 10 -1 M HCN solution? NB the pKa for HCN = 9.212

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What is the pH of a 2.62 x 10 -1 M HCN solution? NB the pKa for HCN = 9.212

[From: ] [author: ] [Date: 13-05-28] [Hit: ]

pH = -log(1.pH = 4.......

Ka = 10^-9.212
Ka = 6.13*10^-10
[H+] = √6.13*10^-10 * 2.62*10^-1
[H+] = 1.26*10^-5M
pH = -log(1.26*10^-5)
pH = 4.89

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