Identification of an unknown compound Inorganic compound Organic compound solubility in water elementary analysis yes no C, H, O C, H, O, N C, H, O, N, S solubility in HCl Go to Flowchart 1 Go to Flowchart 3 Go to Flowchart 4 Go to Flowchart 5 yes no Go to Flowchart 2 You have made a mistake An unknown compound Flowchart 1: Identification of an inorganic compound soluble in water Potassium aluminium sulphate - + or identification Zinc sulphate heptahydrate - + Calcium chloride identification Magnesium chloride - + or identification Magnesium sulphate You have made a mistake Inorganic compound soluble in water reaction with amonium oxalate solution I reaction with sodium hydroxide solution reaction with titan yellow I Flowchart 2: Identification of an inorganic compound insoluble in water and soluble in HCl Calcium carbonate - + or identification Calcium sulphate Magnesium peroxide - + or identification Magnesium subcarbonate You have made a mistake Inorganic compound soluble only in hydrochloric acid reaction with titan yellow II reaction with amonium oxalate solution II Flowchart 3: Identification of an organic compound containing C, H, O Ascorbic acid or neutral or basic acid Citric acid identification + - You have made a mistake or Tartaric acid Phenol Acetylsalicylic acid - + or identification neutral or basic acid or identification Resorcinol Salicylic acid Methylparabene Glucose or or Ethylparabene - + Fructose identification or or Propylparabene Lactose Sucrose identification reaction with Fehlin's reagent Organic compound containing C, H, O soluble in water insoluble in water solubility in ethanol pH of water suspensionreaction with ferric chloride solution pH of the solution Flowchart 4: Identification of an organic compound containing C, H, O, N Phenazone - + or identification + - You have made a mistake Piperazine hexahydrate Phenobarbital - + Urea identification - + or identification Allobarbital Aminophenazon identification Acetaminophen - + or identification Phenacetin Benzocain identification Organic compound containing C, H, O, N soluble in water insoluble in water reaction with potassium dichromate solution reaction with sodium nitrite reaction with copper sulphate solution reaction with cobalt (II) nitrate solution solubility in ethanol Flowchart 5: Identification of an organic compound containing C, H, O, N, S Sulphafurazol - + or identification Sulphathiazol Phtalylsulphathiazol identification diazotization and copulation Organic compound containing C, H, O, N, S