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A 22.8 ml. sample of a 0.400 M aqueous hydrocyanic acid solution is titrated with a 0,409 M aqueous potassium hydroxide solution. What is

A 22.8 ml. sample of a 0.400 M aqueous hydrocyanic acid solution is titrated with a 0,409 M aqueous potassium hydroxide solution. What is the pH at the start of the titration, before any potassium hydroxide has been added? pH - %3D

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