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The formaldehyde (CH2O) in a 4.00 g sample of a seed-disinfectant was steam distilled into a500.0 mL volumetric flask and diluted with water to full mark. A 25.0 mL aliquot taken fromthe diluted solution was treated with 30.0 mL of 0.123 M KCN solution to convert the CH2O topotassium cyanohydrin.CH2O K^ CN^- →KOCH2CNThe excess KCN was then removed by the addition of 40.0 mL of 0.100 M AgNO3.2CN^- 2Ag^ →Ag2(CN)2The excess Ag^ from this reaction was titrated with 0.113 M NH4SCN and requir

The formaldehyde (CH2O) in a 4.00 g sample of a seed-disinfectant was steam distilled into a500.0 mL volumetric flask and diluted with water to full mark. A 25.0 mL aliquot

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