Problem: Hydrocyanic acid, HCN, is a weak acid with a Ka value of 4.9 x 10-10. What is the principal species, HCN or CN –, at a pH of 7.30?

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Hydrocyanic acid, HCN, is a weak acid with a Ka value of 4.9 x 10-10. What is the principal species, HCN or CN –, at a pH of 7.30?

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