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what is the ph of a 0.10m solution of nacn at 25°c (ka=4.9×10^-10 for hcn). I've...

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Chemistry

what is the ph of a 0.10m solution of nacn at 25°c(ka=4.9×10^-10 for hcn). I've gotten 5.15 as a pH but the correctanswer is 11.15. I don't see how it's 11.15...

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HCN Prussic Acid is a weak acid write the equilibrium equation between the acid and its conjugate base H2Ol CNaq HCNaq OHaq    See Answer
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